in licl and becl2 although li has small size than be then also it is ionic because there are 2 big chlorine atoms in becl2 in which there is more distortion m right?
For d block element outer orbital is d orbital which has poor shielding effect meaning effect of nucleus will be more outer eletron which will result in overlapping of orbital (ele...
This covalency will increase with the increase in the oxidation state.On increasing oxidation state of a cation it's size decreases and hence its polarizing power increases.