ionization energy, atomic radius, metallic

Question

consider the series of elements B, C, N, O, F

Which element has the highest final ionization energy?

which element has the largest atomic radius?

which element is most metallic?

which element has three unpaired electrons?

Answer 1

B = boron

C = carbon

N = nitrogen

O = oxygen

F = fluorine

These are Period 2 elements. When reading the periodic table from left to right (B, C, N, O, F), atomic number increases, atomic radius decreases, electronegativity increases, and ionization energy increases.

Fluorine has the highest final ionization energy.

Boron has the largest atomic radius.

Boron is the most metallic.

Boron has three unpaired electrons.