Question

A. Tick the most appropriate answer.
1. Which of the following is an element?
a. NaCl b. Fes d. Cu C. Co​

Answer 1

Answer:

NaCl and FeS are not elements they are compounds element is the single one like Copper or covered

Answer 2

Answer:

According to your given question, we need to find out the elements from the given 4 options,

So, Here We have Cu(Cuprum) or Copper and Co or Cobalt is an element.

Whereas NaCl or Sodium Chloride is a compound formed from the two elements , Sodium (Na) and Chlorine (Cl) .

Also, Fes (Ferrum/Iron Sulphate) is a compound formed from the two elements,i.e, Iron or Ferrum and Sulphur (S) .