Protons, neutrons, electrons

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 an oxygen atom have?

Back

An oxygen atom has 8 protons.

Front

What is the charge of an atom with 2 protons, 3 neutrons, and 4 electrons?

Back

The charge is -2 because there are more electrons than protons.

Front

How many neutrons are in a beryllium atom?

Back

A beryllium atom has 5 neutrons.

Front

What is the relationship between atomic number and protons?

Back

The atomic number is equal to the number of protons in an atom.

Front

How many electrons does a neutral magnesium atom have?

Back

A neutral magnesium atom has 12 electrons.

Front

What is the charge of a magnesium ion with 2 fewer electrons than protons?

Back

The charge is +2.

Front

Define protons.

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

Define neutrons.

Back

Neutrons are neutral particles found in the nucleus of an atom.

Front

Define electrons.

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.