Atomic Theory Test Review (FY25)

Front

What is the shape of an s orbital?

Back

Sphere

Front

What term did Max Planck use to describe the small, specific amounts of energy radiated by a hot object?

Back

Quanta

Front

What are isotopes?

Back

Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

If one electron in an orbital spins clockwise, what is the spin of the other electron?

Back

Counterclockwise

Front

What feature of Dalton's atomic theory is no longer considered correct?

Back

All atoms of each element are identical in every respect.

Front

Why is the statement 'All atoms of each element are identical in every respect' no longer valid?

Back

The existence of isotopes.

Front

What is the principal quantum number?

Back

It indicates the main energy level of an electron in an atom.

Front

What is the maximum number of electrons that can occupy an s orbital?

Back

2 electrons.

Front

What is the difference between an atom and an ion?

Back

An atom is neutral, while an ion has a net charge due to the loss or gain of electrons.

Front

What is the significance of the atomic number?

Back

The atomic number represents the number of protons in the nucleus of an atom and determines the element's identity.