Question

Arrange in order of increasing ionization energy. (Use the appropriate <, =, or > symbol to separate substances in the list.)

Answer 1

Explanation:

The 3 elements are As, Ga, and Se.

Please, look at the next picture:

According to the 2 pictures above, the right arrangement will be:

Ga < As < Se

Ga has the lowest ionization energy and Se has the highest ionization energy.

Answer: Ga < As < Se