Question

a. include and label all the major subatomic particles of the atom.
b. most of the mass of an atom is located circle one in the nucleus / outside the nucleus
c. the positive charges are distributed (or found) in the nucleus / outside the nucleus
d. most of the volume (or space) of the atom is in the nucleus / outside the nucleus
40ar
mass number of an argon isotope increases from atoms
remains the same d. decreases
and electrons. atoms with more electrons than

Explanation:

Step1: Identify sub - atomic particles

The major sub - atomic particles of an atom are protons (positively charged), neutrons (neutral), and electrons (negatively charged). Protons and neutrons are in the nucleus, and electrons are outside the nucleus.

Step2: Determine mass location

Protons and neutrons have significant mass compared to electrons. Since they are in the nucleus, most of the mass of an atom is in the nucleus.

Step3: Locate positive charges

Protons carry positive charges and are located in the nucleus. So positive charges are in the nucleus.

Step4: Analyze volume distribution

The space occupied by electrons (outside the nucleus) is much larger than the volume of the nucleus. So most of the volume of an atom is outside the nucleus.

Answer:

a. Protons (in nucleus, + charge), neutrons (in nucleus, 0 charge), electrons (outside nucleus, - charge)
b. in the nucleus
c. in the nucleus
d. outside the nucleus