The valency of H in HCl ,H2 and H2O are respectively +1 , +1,+2 . 1.) HCl. As we know Cl is in 17th group of periodic table. So it require one electron to complete its valence shell.Addition to that its electronegativity is higher than Hydrogen. So, Cl gains an electron from H. Hence, Valency of H in HCl is +1. read more
The valency of H in HCl ,H2 and H2O are respectively +1 , +1,+2 . 1.) HCl As we know Cl is in 17th group of periodic table. So it require one electron to complete its valence shell.Addition to that its electronegativity is higher than Hydrogen. read more