Classify each statement about effective nuclear charge, 𝑍eff , as true or false.

Why do atomic radii decrease from left to right across a period of the periodic table?

The shielding of electrons gives rise to an effective nuclear charge, Z_eff, which explains why boron is larger than oxygen. Estimate the approximate Z_eff felt by a valence electron of boron and oxygen, respectively?

Calculate Z_eff for a 3d electron in a copper atom, Cu.

The shielding of electrons gives rise to an effective nuclear charge, Z_eff, which explains why boron is larger than oxygen. Estimate the approximate Z_eff felt by a valence electron of boron and oxygen, respectively?

What trend in atomic radius occurs down a group on the periodic table what causes this trend?