Subatomic Particles

Front

What are subatomic particles?

Back

Subatomic particles are the particles that make up an atom, including protons, neutrons, and electrons.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (it is neutral).

Front

What is the electron configuration for Hydrogen (H)?

Back

1s² (Hydrogen has 1 electron, so its configuration is simply 1s¹).

Front

What is the electron configuration for Helium (He)?

Back

1s² (Helium has 2 electrons, both in the 1s orbital).

Front

What is the maximum number of electrons that can occupy the first energy level?

Back

The first energy level can hold a maximum of 2 electrons.

Front

What is the maximum number of electrons that can occupy the second energy level?

Back

The second energy level can hold a maximum of 8 electrons.

Front

Who proposed the Plum Pudding Model of the atom?

Back

The Plum Pudding Model was proposed by J.J. Thomson.

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.