GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Atomic mass
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atomic number
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symbol
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Isotope
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Detailed explanation-1: -A chemical symbol is a one-or two-letter designation of an element. Some examples of chemical symbols are O for oxygen, Zn for zinc, and Fe for iron. The first letter of a symbol is always capitalized.
Detailed explanation-2: -Every element is also represented by a chemical symbol, a one or two letter symbol. When the element is represented by two letters, the first letter is always capitalized and the second letter is lowercase. The chemical symbol of hydrogen is H.
Detailed explanation-3: -There are 14 elements represented by a single letter on the periodic table: Hydrogen (H), Boron (B), Carbon (C), Nitrogen (N), Oxygen (O), Fluorine (F), Potassium (K), Yttirium (Y), Iodine (I), Tungsten (W), Uranium (U), Sulfur (S), Phosphorus (P), and Vanadium (V).
Detailed explanation-4: -A pure substance that is made of only one kind of atom. The sybol for and Element is always one or two letters. When the sybol contain two letters the first letter is always capital and the second is always lower case. A pure substance containing two or more elements that are chemically combined.