Question

Consider the following model of a generic atom.

Which of the following is correct regarding the ""regions"" labeled 1 and 2?
a. Region 1 contains most of the mass and is negatively charged.
b. Region 2 contains very little mass and is positively charged.
c. Region 1 contains most of the mass and not charged.
d. Region 2 contains very little mass and is not charged.
d. Region 1 contains most of the mass and is positively charged.

Answer 1

Region 1, the nucleus, contains most of the mass and is positively charged, while region 2, which is where the electrons orbit, contains very little mass and is negatively charged.

Step-by-step explanation:

In an atomic model, region 1 typically represents the nucleus and region 2 represents the space outside the nucleus where electrons are found. According to the atomic structure, region 1 contains most of the mass and is positively charged. This is because it comprises protons, which have a positive charge, and neutrons, which have no charge but contribute to the mass. On the other hand, region 2 contains very little mass and is negatively charged, as it is mostly empty space with electrons, which are negatively charged and have much less mass than protons or neutrons, orbiting the nucleus.