Honors Atomic Structure Test

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in the nucleus of an atom.

Front

How do you calculate the mass number?

Back

Mass number = Protons + Neutrons.

Front

What is the number of neutrons in an isotope with a mass number of 41 and 20 protons?

Back

21 neutrons.

Front

What is the correct symbol for Fluorine-18?

Back

The symbol is 18F.

Front

What period and group is Silver (Ag) located in?

Back

Period 5, Group 11.

Front

How many valence electrons do most noble gases have?

Back

8 valence electrons.

Front

What is an isotope?

Back

Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

Define atomic number.

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the difference between an atom and an ion?

Back

An atom is neutral, while an ion has a net charge due to the loss or gain of electrons.

Front

What is the electron configuration of Fluorine (atomic number 9)?

Back

1s² 2s² 2p⁵.