Aditi Chauhan
Last Activity: 10 Years ago
Sol. (a) Incorrect : Electrons are not filled in sub-energy levels s, p, d and f in the same sequence.
(b) Correct : No. of valence shell electrons usually determine the stable valency state of an element.
(c) Correct : Physical and chemical properties of elements are periodic function of atomic number which is the basis of modern, long form, of Periodic Table.
(d) Correct : Realtive iconicity of the bond between any two elements is function of electronegativity difference of the bonded atoms which in turn has periodic trend in long form of Periodic Table.