Question

the image shows a model of a lithium atom. the image shows subatomic particles concentrated at the center, surrounded by a diffused gray circular region. three of the particles have positive symbols, while the other 4 do not have symbols. below the gray region it is labeled 3 e with a negative charge. how many neutrons are in this lithium atom?

Explanation:

Step1: Identify protons

The number of positive - charged particles in the nucleus is the number of protons. Lithium has 3 protons (as indicated by the 3 positive - charged particles in the nucleus and the 3 electrons outside, since in a neutral atom, the number of protons = the number of electrons).

Step2: Identify neutrons

The particles in the nucleus without a charge are neutrons. There are 4 particles in the nucleus without a charge.

Answer:

4