Atomic structure

Front

What is the charge of an electron?

Back

Negative charge.

Front

Where are protons located in an atom?

Back

In the nucleus.

Front

What is the charge of a proton?

Back

Positive charge.

Front

How many protons are in a platinum atom?

Back

78 protons.

Front

What is the atomic mass of an atom?

Back

The weighted average mass of an atom's isotopes.

Front

What is the role of neutrons in an atom?

Back

Neutrons help stabilize the nucleus.

Front

How do you calculate the number of neutrons in an atom?

Back

Subtract the number of protons from the atomic mass.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the smallest subatomic particle?

Back

Electron.

Front

What is the atomic mass of barium?

Back

137.