Question

1. which of the following is true regarding the formation of the barium ion? (0.5 points) when barium forms an ion, it loses two valence electrons. when barium forms an ion, it loses one valence electron. when barium forms an ion, it gains two valence electrons. when barium forms an ion, it gains one valence electron. 20. name the following ion: sr2+ (0.5 points) enter your answer

Explanation:

Step1: Determine the position of barium in the periodic table

Barium (Ba) is in group 2 of the periodic table. Elements in group 2 have 2 valence electrons.

Step2: Analyze the ion - formation process

Metals tend to lose electrons to form cations. Since barium is a metal and has 2 valence electrons, when it forms an ion, it loses these 2 valence electrons to achieve a stable electron configuration.

Answer:

When barium forms an ion, it loses two valence electrons.