atomic structure

Front

What did Bohr propose about electron movement?

Back

Electrons move around the nucleus in specific layers, or shells.

Front

How many electrons does an atom with an atomic number of 6 have?

Back

6

Front

If an element has a mass number of 11 and an atomic number of 5, how many neutrons does it have?

Back

6

Front

What determines the reactivity of an element?

Back

The number of electrons.

Front

What is the atomic number of an element with 9 protons?

Back

9

Front

Define atomic number.

Back

The number of protons in the nucleus of an atom.

Front

What is a neutron?

Back

A subatomic particle found in the nucleus of an atom, with no electric charge.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the nucleus of an atom?

Back

The central part of an atom, containing protons and neutrons.