Question

Which of the following symbols of elements are incorrect? Give their correct symbols 

(a) Cobalt CO 

(b) Carbon c 

(c) Aluminium AL 

(d) Helium He 

(e) Sodium So

Answer 1

(a) Incorrect, the correct symbol of cobalt is Co 

(b) Incorrect, the correct symbol of carbon is C 

(c) Incorrect, the correct symbol of aluminium is Al 

(d) Correct (He) 

(e) Incorrect, the correct symbol of sodium is Na