Question

The atomic numbers of three elements are 5, 7 and 10 respectively. Which of these:
(a)
Belongs to group 18
(b) Belongs to group 15
(C) Belongs to group 13
ond-​

Answer 1

Answer:

a) to 10 b) belongs to 7 and c) belongs to 5

Explanation:

because 5 atomic number comes in the group 13 that's boron and 7 atomic number belongs to 15 that's nitrogen and 10 belongs to 18 that is nickel.