Atomic Concepts Review

Front

What is the electron configuration of an atom in an excited state?

Back

2-5-1

Front

How does the mass of an electron compare to the mass of a neutron?

Back

The mass of an electron is less than the mass of a neutron.

Front

What does the wave-mechanical model of the atom state about electrons?

Back

Electrons are in orbitals outside the nucleus.

Front

If an atom has an atomic number of 35 and 40 neutrons, what can be said about it?

Back

The atom is bromine, and it has 35 electrons.

Front

What is the net charge of an ion with 7 protons, 9 neutrons, and 10 electrons?

Back

3-

Front

Define atomic number.

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is a neutron?

Back

A neutron is 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 mass number is the total number of protons and neutrons in the nucleus.

Front

What is an ion?

Back

An ion is an atom or molecule that has a net electric charge due to the loss or gain of one or more electrons.

Front

What is the difference between a cation and an anion?

Back

A cation is a positively charged ion, while an anion is a negatively charged ion.