Question

Due to the number of valence electrons, which type of atom would a Group 1 element bond with in
a 1:1 ratio?
A. oxygen
B. argon
C. fluorine
D. carbon
What is true about a positively charged ion?
A. It is formed when an atom loses electrons.
B. It is usually a nonmetallic element.
C. It has more electrons than protons.
D. It is formed when an atom gains protons.

Answer 1

1) C. fluorine — Group 1 atoms have one valence electron and form 1:1 ionic bonds with atoms that need one electron (e.g., Na + F → NaF).

2) A. It is formed when an atom loses electrons — a positively charged ion (cation) has fewer electrons than protons (e.g., Na → Na+ + e−).