An atom of the element chromium has an atomic number of 24 and a mass number of 52. How many electrons are in an uncharged atom or chromium.

24

Explanation:

Given parameters:

Atomic number = 24

Mass number  = 52

Unknown:

Number of electrons in the uncharged atom of chromium = ?

Solution:

In an uncharged atom of chromium, the number of protons and electrons are the same.

Once we can find the number protons, we can simply equate it to the number of electrons.

Number of electrons is 24