Question

Question 3.
I. Atomic number of an element is 16, state
a) To which period and group, it belongs
b) The number of valence electrons in the element
c) Is the element a metal or non-metal?
II. Name the following:
a) A non- metal in period 2 which is tetravalent.
b) A covalent compound formed between an element in period 1 and halogen.
c) The periods which contain the inner transition elements.

Answer 1

Explanation:

Q.no. 1.

a) group 16

b) 2

c)non-metal

Q.no. 2.

a) carbon

b) Hydrochloride

c) period 6 and period 7