Question

how many electrons are in a neutral $^{41}$ca atom? answer: a 2 b 20 c 21 d 41

Explanation:

Step1: Recall atomic number concept

The atomic number of calcium (Ca) is 20.

Step2: Use neutral - atom property

In a neutral atom, the number of electrons equals the number of protons, which is equal to the atomic number.

Answer:

B. 20