Question

Is the following symbol of element incorrect? ​
Give the correct symbol.​
(i) Cobalt CO​
(ii) Carbon c
(iii) Aluminum AL
(iv) Helium He
(v) Sodium So

Answer 1

(i) Each element is represented by a unique symbol and by convention, the first alphabet in a symbol is always a capital letter and the rest are only small letters.​
Therefore, the given symbol for cobalt “CO” is incorrect, as the correct symbol of cobalt is “Co”.​

(ii) Each element is represented by a unique symbol and by convention, the first alphabet in a symbol is always a capital letter and the rest are only small letters.​
Therefore, the given symbol for carbon “c” is incorrect, as the correct symbol of carbon is “C”.​

(iii) Each element is represented by a unique symbol and by convention, the first alphabet in a symbol is always a capital letter and the rest are only small letters.
The given symbol for Aluminium (AL) is incorrect, as the correct symbol of aluminium is "Al"

(iv) Each element is represented by a unique symbol and by convention, the first alphabet in a symbol is always a capital letter and the rest are only small letters.
The given symbol for Helium (He) is correct.

(v) Each element is represented by a unique symbol and by convention, the first alphabet in a symbol is always a capital letter and the rest are only small letters.
The given symbol for sodium (So) is incorrect. The Latin name of the element is "Natrium", and its correct symbol is "Na".