The oxidation state of $+1$ for phosphorus is found in:

The most common oxidation state of an element is $-2$. The number of electrons present in its outermost shell is

The electronic configuration of a metal $M$ is $1s^2 2s^2 2p^6 3s^1$. What will be the formula of its oxide?

In any period,the valency of an element with respect to oxygen:

What would be the formula of the compound formed between the following elements?
$(i)$ Aluminium and Bromine
$(ii)$ Sodium and Oxygen
$(iii)$ Silicon and Oxygen
$(iv)$ Phosphorus and Chlorine

Write the name of $Fe_2(SO_4)_3$ according to the stock notation method.