Atomic Structure Quiz

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What is the maximum number of electrons that can be held in the second energy level?

8 (correct)
10
2
18

The atomic mass of Boron is approximately 11.81 amu.

False (B)

What is the atomic number of Boron?

5

Boron has protons and neutrons.

5, 6 Signup and view all the answers

Match the following components with their descriptions:

Atomic Number = Number of protons in an atom Atomic Mass = Weighted average mass of all isotopes Protons = Positively charged particles Neutrons = Neutral particles in the nucleus Signup and view all the answers

What is the main constituent of an atom that contributes to 99.9% of its mass?

Nucleus (D) Signup and view all the answers

Electrons have a positive electrical charge.

False (B) Signup and view all the answers

Name the three primary particles that make up an atom.

Protons, neutrons, electrons Signup and view all the answers

An atom is considered ____, meaning it has the same number of electrons as protons.

neutral Signup and view all the answers

Match the subatomic particles with their characteristics:

Proton = Positive charge Neutron = No charge Electron = Negative charge Signup and view all the answers

Which of the following statements about the mass of subatomic particles is correct?

Neutrons and protons have nearly equal mass. (B) Signup and view all the answers

The atomic number is defined as the number of neutrons in an atom.

False (B) Signup and view all the answers

What determines the number of electrons that can fit in each electron energy level?

The unique properties of each electron level. Signup and view all the answers

Atomic Structure

Atoms are the fundamental building blocks of matter.

Subatomic Particles

Protons, neutrons, and electrons are the particles that make up atoms.