Question

1. calcium has one more electron than potassium in its outer shell. how many electrons are likely to leave the calcium atom?

Explanation:

Step1: Determine the valence electrons of calcium

Calcium is in group 2 of the periodic table. Elements in group 2 have 2 valence electrons.

Step2: Consider the electron - loss tendency

Atoms tend to lose or gain electrons to achieve a stable electron configuration (usually a full outer shell). Calcium will lose its 2 valence electrons to form a \(Ca^{2 +}\) ion with a stable electron configuration (similar to the noble gas argon).

Answer:

2