Question

The electron arrangement of metal m is 2.8.3 write the formular of the sulphide of m

Answer 1

according to given conditions the metal m, is likely to be aluminium. formula of aluminium sulphide is Al2(SO4)3

$al \frac{}{2} (so\frac{}{4}) \frac{}{3}$

Answer 2

The given metal have atomic number 13 so valency is 3 and valency of sulphide is 2 therefore the chemical formula of the compound is M2S3