SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Co
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CO
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CO2
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CO3-2
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Detailed explanation-1: -Cobalt is a chemical element with symbol Co and atomic number 27.
Detailed explanation-2: -The symbol CO stands for carbon monoxide, but the sym-bol Co stands for the element cobalt.
Detailed explanation-3: -Cobalt compounds are commonly used to make colored glass, glazes, paints, rubber, inks, cosmetics, and pottery. These compounds compounds include: cobalt oxide, cobalt potassium nitrite, cobalt aluminate, and cobalt ammonium phosphate.
Detailed explanation-4: -Cobalt is a chemical element – a substance that contains only one type of atom. Its official chemical symbol is Co and its atomic number is 27, which means that a cobalt atom has 27 protons in its nucleus.
Detailed explanation-5: -It is a hard ferromagnetic, silver-white, lustrous, brittle element. It is stable in air and does not react with water. Like other metals, it can also be magnetized. With dilute acids, it reacts slowly. The metal melts at 1495 °C and boils at 2927 °C.