Calculate the formal charge of C in CH4.

The bond enthalpy of H2O and OH are 502 KJ mol-1 and 427 KKJ mol-1. Then what is the average bond enthalpy?

What’s the group valance of atoms in the halogen family?

Find out the correct Lewis symbol for the atom carbon among the following options.

Stability increases, as the energy _______

Highly electropositive Alkali metals are separated from highly electronegative halogens by _____

A positive overlap is same as ____

The strength of covalent _______ extent of overlapping of orbitals.