Electrons in a p orbital are more effective than those in other orbitals at shielding other electrons from the nuclear charge

Electrons in a p orbital are more effective than those in other orbitals at shielding other electrons from the nuclear charge. Across a period, as Zeff increases, atomic size decreases. A 1s electron in a B atom has a smaller Zef than a 1s electron in a Be atom. Effective nuclear charge is dependent on the number of electrons present in an atom. In a N atom, a 1s electron has a greater Zeff than a 2s electron. Effective nuclear charge decreases from left to right across a period on the periodic table.

Classify each statement about effective nuclear charge, ?eff , as true or false