Did i pair these right?
C. Lone elements and atoms in gases: 0
E. Elements in groups 1, 2, and 17 and polyatomic ions: Ionic charge
B. Hydrogen: +1, – 1 if bonded to a diatomic metal
A. Oxygen: Almost always –2
D. Elements with multiple oxidation states: Determined by other elements in the compound

Question

Did i pair these right?
C. Lone elements and atoms in gases: 0
E. Elements in groups 1, 2, and 17 and polyatomic ions: Ionic charge
B. Hydrogen: +1, – 1 if bonded to a diatomic metal
A. Oxygen: Almost always –2
D. Elements with multiple oxidation states: Determined by other elements in the compound

aaronq · Answer

Lone elements and atoms in gases ... as in noble gases or homonuclear gases.

It's right.

anonymous · Answer

thanks!