Question

What is the metal m in compound M2O5.
i) 1
ii)5
iii)6
iv)4
how?​

Answer 1

Answer:

Period no. = no. of shells , so n = 5

From the formula M

2

O

5

its valency is 5

Since it is a metal, its valence shell has 5 electrons.

So its electronic configuration is 2,8,5

Atomic number = 15

Hence the metal is Aluminum with valency 5.