atoms are characterized by number of
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Isotopes nuclide a type of atom characterized by the View Full Document. Isotopes • Nuclide – A type of atom characterized by the number of protons and neutrons in the nucleus of every atom of this type. • Isotopes – Atoms with the same number of protons (same element) but containing different numbers of neutrons. – Nuclides with same atomic number but different atomic masses. This preview has intentionally blurred sections.
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Atomic Structure Atoms are composed of three type of particles: protons, neutrons, and electron. Protons and neutrons are responsible for most of the atomic mass e.g in a 150 person 149 lbs, 15 oz are protons and neutrons while only 1 oz. is electrons.The mass of an electron is very small (9.108 X 10 -28 grams).toms are composed of three type of particles: protons, neutrons, and electron. Protons and neutrons are responsible for most of the atomic mass e.g in a 150 person 149 lbs, 15 oz are protons and neutrons while only 1 oz. is electrons.
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- The smallest kind of molecule is composed of only two other atoms. The atoms can be of the same kind or of different kinds. Molecules that are composed of two atoms of the same kind are also referred to as elements. All molecules that have only two atoms are called diatomic molecules.f the molecule contains more than one kind of atom, it is called heteroatomic. The presence of homoatomic molecules indicates that not all elements prefer to be in the state of individual atoms. There are elements that are molecular and composed of two, four, or even eight atoms.
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General Chemistry/Numbers Used to Describe Atoms The mass number measures the number of protons and neutrons in the nucleus of a particular atom. The atomic mass measures the average mass of all atoms for an element. For example, a carbon atom might have a mass number of 12 or 14 (or something else), but carbon in general has a mass of 12.011 amu.
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- Relevance. Rating Newest Oldest. Best Answer: The number or protons is what defines an atom and distinguishes it from any other element. All atoms of the same element has the same number of protons but may vary in its number of neutrons (isotopes of the element) or number of electrons (its valance state). Source(s): dougger · 8 years ago. Thumbs up.
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atomic number [1815–25] The number of protons in the nucleus of an atom. In electrically neutral atoms, this number is also equal to the number of electrons orbiting about the atom's nucleus. The atomic number of an element determines its position in the Periodic Table.
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element An element is uniquely determined by the number of proton s in the nuclei of its atom s. The number of protons in the nucleus of the atom of an element is known as the atomic number of that element. The number of electron s in the atom of a specific element can vary. If the number of electrons is the same as the number of protons, then the atom has no electric charge. However, if the number of electrons is different from the number of protons, the atom is called an ion. If there are more electrons than protons, it is a negative ion; if there are fewer electrons than protons, it is a positive ion. The number of neutron s in the atom of a specific element can also vary. The number of neutrons in the nucleus of an element determines the isotope of the element.
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Introduction Atomic number, atomic mass, and relative atomic mass. Atoms of each element contain a characteristic number of protons. In fact, the number of protons determines what atom we are looking at (e.g., all atoms with six protons are carbon atoms); the number of protons in an atom is called the atomic number.
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CHEMISTRY I: ATOMS AND MOLECULES The atomic number is the number of protons an atom has. It is characteristic and unique for each element. The atomic mass (also referred to as the atomic weight) is the number of protons and neutrons in an atom.
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Translations for atomic number The atomic number uniquely identifies a chemical element. In an uncharged atom, the atomic number is also equal to the number of electrons. The atomic number, Z, should not be confused with the mass number, A, which is the number of nucleons, the total number of protons and neutrons in the nucleus of an atom.
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Atom Atoms of the same element have the same number of protons, called the atomic number. Within a single element, the number of neutrons may vary, determining the isotope of that element. The total number of protons and neutrons determine the nuclide.ne mole of atoms of any element always has the same number of atoms (about 7023602200000000000♠6.022×1023). This number was chosen so that if an element has an atomic mass of 1 u, a mole of atoms of that element has a mass close to one gram.
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Atom Every atom is composed of a nucleus and one or more electrons bound to the nucleus. The nucleus is made of one or more protons and typically a similar number of neutrons (none in hydrogen-1).Protons and neutrons are called nucleons.Over 99.94% of the atom's mass is in the nucleus.very atom is composed of a nucleus and one or more electrons bound to the nucleus. The nucleus is made of one or more protons and typically a similar number of neutrons (none in hydrogen-1). Protons and neutrons are called nucleons. Over 99.94% of the atom's mass is in the nucleus.
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Atomic number Hence, it is the atomic number alone that determines the chemical properties of an element; and it is for this reason that an element can be defined as consisting of any mixture of atoms with a given atomic number.
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CHEMISTRY I: ATOMS AND MOLECULES The atomic number is the number of protons an atom has. It is characteristic and unique for each element. The atomic mass (also referred to as the atomic weight) is the number of protons and neutrons in an atom. Atoms of an element that have differing numbers of neutrons (but a constant atomic number) are termed isotopes.
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What is an Atom? The number of protons in an atom is referred to as the atomic number of that element. The number of protons in an atom also determines the chemical behavior of the element. The Periodic Table of the Elements arranges elements in order of increasing atomic number. Protons are made of other particles called quarks.There are three quarks in each proton — two up quarks and one down quark — and they are held together by other particles called gluons.rotons and neutrons are heavier than electrons and reside in the center of the atom, which is called the nucleus. Electrons are extremely lightweight and exist in a cloud orbiting the nucleus. The electron cloud has a radius 10,000 times greater than the nucleus. Protons and neutrons have approximately the same mass.
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element An element is uniquely determined by the number of proton s in the nuclei of its atom s. The number of protons in the nucleus of the atom of an element is known as the atomic number of that element. The number of electron s in the atom of a specific element can vary. If the number of electrons is the same as the number of protons, then the atom has no electric charge. However, if the number of electrons is different from the number of protons, the atom is called an ion. If there are more electrons than protons, it is a negative ion; if there are fewer electrons than protons, it is a positive ion. The number of neutron s in the atom of a specific element can also vary.
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atomic number The definition of an atomic number is the number of protons in the nucleus of an atom of an element. Three for lithium and 20 for calcium are each an example of an atomic number.
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Chemistry A chemical element is a pure substance which is composed of a single type of atom, characterized by its particular number of protons in the nuclei of its atoms, known as the atomic number and represented by the symbol Z. The mass number is the sum of the number of protons and neutrons in a nucleus.hemistry is a branch of physical science that studies the composition, structure, properties and change of matter.
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Atoms In all atoms, the number of protons and the number of electrons is always the same. The number of neutrons is very roughly the same as the number of protons, but sometimes it's rather more. The number of protons in an atom is called the atomic number and it tells you what type of atom you have.
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The atomic number of an atom reveals the number of? The atomic number is the count of how many protons an atom has in its nucleus (and therefor also the count of how many electrons the neutral atom possesses). The atomic number … is unique for each element and positions the element in the periodic table.
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- 2c. Seven-year-old male; square face, somewhat broad nasal root. Note prominent ear with unfolded helix and wide neck. 2d. Nine-year-old female; square face, round eyes, wide neck, sloping shoulders. Note lack of facial expression as a result of bilateral facial palsy. 2e. Fifteen-year-old male.
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What is an Atomic Number? The atomic number is the number of protons — positively charged particles — in the nucleus an atom of a chemical element. Elements are distinguished from one another by the numbers of these particles they have, and so each element has its own unique atomic number.
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- The Greeks concluded that matter could be broken down into particles to small to be seen. These particles were called atoms Atoms are composed of three type of particles: protons, neutrons, and electron.
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Atom Every atom is composed of a nucleus and one or more electrons bound to the nucleus. The nucleus is made of one or more protons and typically a similar number of neutrons (none in hydrogen-1).Protons and neutrons are called nucleons. Over 99.94% of the atom's mass is in the nucleus.ne mole of atoms of any element always has the same number of atoms (about 7023602200000000000♠6.022×1023). This number was chosen so that if an element has an atomic mass of 1 u, a mole of atoms of that element has a mass close to one gram.
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Atomic Structure Atoms are basic building blocks of matter, and cannot be chemically subdivided by ordinary means. The word atom is derived from the Greek word atom which means indivisible. The Greeks concluded that matter could be broken down into particles to small to be seen. These particles were called atoms. Atoms are composed of three type of particles: protons, neutrons, and electron. Protons and neutrons are responsible for most of the atomic mass e.g in a 150 person 149 lbs, 15 oz are protons and neutrons while only 1 oz. is electrons. The mass of an electron is very small (9.108 X 10-28 grams).
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Atoms, Isotopes, Ions, and Molecules Elements are organised into blocks by the orbital type in which the outer electrons are found. These blocks are named for the characteristic spectra they produce: sharp (s), principal (p), diffuse (d), and fundamental (f). Atomic number The number of protons in an atom. Electron configuration