1.

Two elements X and Y have the following configurations. X = 1s2 2s2 2p6 3s23p64s2 Y = 1s2 2s2 2p6 3s2 3p5What is the formula of the compound?

Answer»

The electronic configuration of X is 1s2 2s2p6 3s23p64s2  

So its valency is 2.

The electronic configuration of Y is  1s2 2s2 2p6 3s2 3p5

So its valency is 1. 

∴ The formula of the compound is XY2



Discussion

No Comment Found