Periodic Table Test Review

Front

What is the atom with the largest atomic radius in Group 18?

Back

Rn (Radon)

Front

How many neutrons does sulfur have?

Back

16 neutrons

Front

How many valence electrons does a noble gas have?

Back

8 valence electrons

Front

What shape do Bohr models represent?

Back

Circles

Front

What is the electron configuration for Phosphorus (P)?

Back

1s2 2s2 2p6 3s2 3p3

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the significance of valence electrons?

Back

They determine an atom's chemical properties and reactivity.

Front

What is the periodic trend for atomic radius across a period?

Back

Atomic radius decreases from left to right across a period.

Front

What is the periodic trend for ionization energy down a group?

Back

Ionization energy decreases as you move down a group.

Front

What are isotopes?

Back

Atoms of the same element with different numbers of neutrons.