Question

Which is a characteristic of the part of the atom marked "A”?

A. It contains most of the mass.
B. It is negatively charged.
C. It is mostly empty space.
D. It is composed of electrons.

Answer 1

a
the nucleus has both protons and neutrons making it the most dense area. the section marked b and the white space is the electron cloud which although takes up more space, has less mass because protons and neutrons are approx. 1 amu while electrons are roughly 0 amu

Answer 2

A I think

Step-by-step explanation:

It is very dense.

The atom becomes positively charged.

-hope i helped