Neutron

Front

What is a neutron?

Back

A neutron is a subatomic particle found in the nucleus of an atom. It has no electric charge and contributes to the mass of the atom.

Front

How many neutrons does an element with an atomic number of 3 and a mass of 6.9 contain?

Back

4 neutrons (Mass - Atomic Number = Neutrons: 6.9 - 3 = 3.9, rounded to 4).

Front

Who arranged the Periodic Table of Elements?

Back

Dmitri Mendeleev is credited with arranging the Periodic Table.

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 also determines the element's identity.

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

Which element is in period 3 group 2?

Back

Magnesium (Mg) is in period 3 group 2.

Front

What is the charge of a neutron?

Back

A neutron has no charge; it is neutral.

Front

What is the nucleus of an atom?

Back

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

Front

What is the difference between protons and neutrons?

Back

Protons are positively charged particles, while neutrons are neutral particles.

Front

What is an electron cloud?

Back

The electron cloud is a region around the nucleus where electrons are likely to be found.