Atomic Structure Quiz

1. What particles are found in the nucleus of an atom?

A) Electrons only B) Protons and neutrons C) Neutrons only D) Electrons and protons

2. Atomic number equals the number of:

A) Neutrons B) Protons C) Electrons and neutrons D) Mass

3. Isotopes of the same element differ in the number of:

A) Electrons B) Protons C) Neutrons D) Atomic number

4. Electrons are located in the:

A) Nucleus B) Electron cloud/shells C) Center of atom D) Protons

5. The mass number of an atom is:

A) Number of electrons B) Protons minus neutrons C) Protons plus neutrons D) Neutrons only

6. Electron shells fill starting from:

A) Outermost shell B) Innermost shell C) Random order D) Nucleus

7. Atoms with the same number of protons but different neutrons are called:

A) Ions B) Isotopes C) Molecules D) Ions and isotopes

8. A positively charged ion has:

A) More electrons than protons B) Fewer electrons than protons C) Equal electrons and protons D) No electrons

9. The maximum number of electrons in the first shell is:

A) 1 B) 2 C) 8 D) 18

10. The electron configuration of carbon (6 electrons) is written as:

A) 2,4 B) 2,6 C) 2,8 D) 1,5

Atomic Structure Quiz Quiz