Question

State the periodic trends across a period number of shells.atomic size.electropossitive.electronegative

Answer 1

✔✅Atomic radius decreases from left to right within a period. This is caused by the increase in the number of protons and electrons across a period. One proton has a greater effect than one electron; thus, electrons are pulled towards the nucleus, resulting in a smaller radius This is caused by electron shielding

Answer 2

Answer:

In period,electopositive decreases and electronegativity increases and atomic radius decreases.

In group, electopositive increases and electronegativity decreases and atomic radius increases.