Starter: Atomic Structure/Average Atomic Mass

Front

What is the atomic number of an element?

Back

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

Front

How many protons does Oxygen have?

Back

Oxygen has 8 protons.

Front

What is the relationship between protons and electrons in a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons.

Front

Define isotopes.

Back

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

Front

What is the average atomic mass?

Back

The average atomic mass is the weighted average of the masses of an element's isotopes, taking into account their relative abundance.

Front

How many neutrons are in Carbon-13?

Back

Carbon-13 has 7 neutrons.

Front

What is true about a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons.

Front

Which isotope of Nitrogen is the most abundant?

Back

Nitrogen-14 is the most abundant isotope of Nitrogen.

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

If an atom has 6 protons and 7 neutrons, what is its mass number?

Back

The mass number is 13 (6 protons + 7 neutrons).