Question

4. Which of the following are incorrectly matched?
i. Cobalt- CO
ii. Carbon-C
iii. Tin-Sn
iv. Chlorine CL
d. ii and iv
a. i, iv
b. ii, iii and iv
C. i, ii, iv​

Answer 1

Answer:

Which of the following are incorrectly matched?

i. Cobalt- CO

ii. Carbon-C

iii. Tin-Sn

iv. Chlorine CL

d. ii and iv

a. i, iv

b. ii, iii and iv

C. i, ii, iv

Explanation:

b. ii. iii and iv

Answer 2

Answer:

i and iv

Explanation:

The chemical formula of

Cobalt is "Co" not "CO"

Chlorine is "Cl" not "CL"