Question

write the names and symbols and identify their valencies from molecular formulae given below. KCl,HBr,MgBr2,K2ONaH,CaCl2,CCl4,HI,H2S,Na2SFeS,BaCl2​

Answer 1

Answer:

1.kcl: potassium chloride - k(+1),cl-(-1)

2.HBr: Hydrogen Bromide- H(+1),Be(-1)

3.MgBr: magnesium Bromide-mg(+2),Be(-1)

4.K2O.potassium oxide-k(+1),O(-2)

5.NaH: sodium Hydride- Na(+1),H(+1)