Question

match the atomic number 2, 4, 8, 15 and 19 with each of the following.
a) A solid non- metal belongs to the third period.
b) A metal of valancy 1.
c) A gaseous element with valency 2.
d) An element belonging to group 2.
e) A rare gas​

Answer 1

Answer:

a) atomic number 15

b) atomic number 19

c) atomic number 8

d) atomic number 4

e) atomic number 2

Explanation:

hope this answer help you with the speed of light.