what does an element's atomic number represent?
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What does Z in chemistry mean? In chemistry and physics, the atomic number of a chemical element (also known as its proton number) is the number of protons found in the nucleus of an atom of that element, and therefore identical to the charge number of the nucleus.
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Periodic Table of Elements The periodic table contains an enormous amount of important information: Atomic number: The number of protons in an atom is referred to as the atomic number of that element. The number of protons defines what element it is and also determines the chemical behavior of the element. For example, carbon atoms have six protons, hydrogen atoms have one, and oxygen atoms have eight. Atomic symbol: The atomic symbol (or element symbol) is an abbreviation chosen to represent an element (C for carbon, H for hydrogen and O for oxygen, etc.). These symbols are used internationally and are sometimes unexpected.
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MADMAN BIOLOGY (Z) (ă-tom'ik nŭm'bĕr) The number of protons in the nucleus of an atom; it indicates the position of the element in the periodic system. n the number of protons within an atom's nucleus. a symbol, as a figure or word, expressive of a certain value or a specified quantity determined by count. atomic number.
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What is an unstable atom? The atomic number of an element Telis the number of protons in the nucleus of its atom. The protons are particles charged with positive electricity. Also in the nucleus there are electrically neutral neutrons and an assortment of more than 20 other particles, some positive, some negative and some neutral.
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Chemical element Each element contains only one kind of atom. The number of protons in an atom is called the atomic number. For example, all atoms with 6 protons are of the chemical element carbon, and all atoms with 92 protons are of the element uranium.
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Atomic Structure atomic number quantity of protons in the nucleus of an atom of an element. The number of neutrons in an atom is the difference between the mass number and atomic number for that atom. The atomic number is the number of protons in the nucleus of an atom of that element.
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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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General Chemistry/Numbers Used to Describe Atoms General Chemistry/Numbers Used to Describe Atoms - Numbers. 1  The Atomic number is the number of protons in the nucleus of an atom. This number determines the element type of the atom. 2  The atomic number is sometimes denoted Z. Continuing with the example of neon, Z = 10 {\displaystyle Z=10} .
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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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Questions and Answers The atomic number is the number of protons in an atom. This number is fixed and determines what element that atom is. The atomic mass is the mass of an atom and is roughly equ…ivalent to the number of protons plus the average number of neutrons that atoms of that particular element.
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- 1 The element's atomic number. 2  This number is the number of protons an atom of this element contains. 3  The number of protons is the deciding factor when distinguishing one element from another. 4  The element's atomic mass in atomic mass units. 5  This number is a weighted average mass of the element's isotopes.
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Atomic mass The atomic mass of an atom is usually within 0.1 u of the mass number. The number of protons an atom has defines what element it is. However, most elements in nature consist of atoms with different numbers of neutrons. An atom of an element with a certain number of neutrons is called an isotope.
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Periodic Table of Elements The periodic table contains an enormous amount of important information: Atomic Number: The number of protons in an atom defines what element it is. For example, carbon atoms have six protons, hydrogen atoms have one, and oxygen atoms have eight.lements that lie in the same column on the periodic table (called a group) have identical valance electron configurations and consequently behave in a similar fashion chemically.
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How is the atomic number of an atom determined? The number of neutrons can vary as well, and we use the term isotope to differentiate between atoms of a given element with different numbers of neutrons in their nucleus. The atomic number of an element is determined by the number of protons in its nucleus. It's that simple. Note that the number of electrons will only equal the number of protons in an atom that is neutral, and can vary.
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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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- 3. The atomic number refers to the number of protons in an elements nucleus. Each element has a unique atomic number and is known by that number until it receives an official name. For example, the two new superheavy elements 113 and 115 have 113 and 115 protons, respectively, in their nuclei.
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What does Z in chemistry mean? Each oxygen atom contains 8 protons in its nucleus.    The atomic number of a chemical element (also known as its proton  number) is always the number of protons found… in the nucleus of an  atom of that element, and identical to the charge number of the  nucleus. It is conventionally represented by the symbol Z.
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Saxophone Buyer's Guide So if an element has an atomic number of 5, you know that it has 5 protons and 5 electrons. The atomic mass (number at the bottom) is the amount of protons and neutrons added together. Whichever you know, you subtract from the atomic mass.
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- All atoms have a mass number which is derived as follows. 1  An element's or isotope's atomic number tells how many protons are in its atoms.  An element's or isotope's mass number tells how many protons and neutrons in its atoms.
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Periodic Table of Elements The periodic table contains an enormous amount of important information: Atomic Number: The number of protons in an atom defines what element it is. For example, carbon atoms have six protons, hydrogen atoms have one, and oxygen atoms have eight.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. Element Symbol: The element symbol is one or two letters chosen to represent an element (H for hydrogen, etc.).These symbols are used internationally. Atomic Weight: The standard atomic weight is the average mass of an element in atomic mass units (amu).tomic Number: The number of protons in an atom defines what element it is. For example, carbon atoms have six protons, hydrogen atoms have one, and oxygen atoms have eight. The number of protons in an atom is referred to as the atomic number of that element.
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What Does the Atomic Number of an Atom Identify? The three main atomic particles are protons, neutrons and electrons. The atomic number of an atom identifies the number of protons in the atom. This is the defining characteristic of an element. An atom can gain or lose neutrons or electrons while retaining its elemental identity. If the number of protons in an atom changes, however, the atom becomes a different element.
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What the Numbers on the Periodic Table Mean However, the value given ​in the periodic table is an average of the mass of all isotopes of a given element. While the number of electrons does not contribute significant mass to an atom, isotopes have differing numbers of neutrons, which do affect mass. How To Identify It: The atomic mass is a decimal number.
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ATOMS  The sum of the protons and neutrons in an atom is called mass number, and is represented by. symbol A.  Atoms of the same element (same atomic number) can possess different number of neutrons. (different mass numbers) and are called isotopes.
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- The atomic number is the number that indicates the number of protons (or electrons) of an element. The atomic mass is on account of the mass of proton and nutron of an atom. The mass of nutron , proton and electrons are 1.67493*10^-(27) 1.67262*10^(-27) kg and 9.10939*10^(-31) kg. The mass of the electron is negligible compared to that of nutron anor proton. The nutron is slightly more mass than that of proton.
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Chemical element The atomic number of an element is equal to the number of protons in each atom, and defines the element. For example, all carbon atoms contain 6 protons in their atomic nucleus; so the atomic number of carbon is 6.he standard state, also known as reference state, of an element is defined as its thermodynamically most stable state at 1 bar at a given temperature (typically at 298.15 K). In thermochemistry, an element is defined to have an enthalpy of formation of zero in its standard state.
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- Problem 3 - The smallest angular size of the sun occurs near the summer solstice at a distance of 152 million. kilometers, when the sun has an angular diameter of 0.525 degrees. How far away, in kilometers, does the moon have.