The thiosulfate of this element can be used to extract gold and to help develop paper.
The thiosulfate of this element can be used to extract gold and to help develop paper. Its emission spectrum is characterized by the D-line, and this element is produced at the cathode of a Downs cell. This element is found in the minerals kernite and halite, and the bicarbonate of this element is also known as nahcolite and can be used to treat dyspepsia. This alkali metal produces an extremely bright yellow result in the flame test. For 10 points, name this element with atomic number 11 and symbol Na.
The thiosulfate of this element can be used to extract gold and to help develop paper.
{sodium} [accept early {Na}]