Atoms and the Periodic Table Test Review

Front

How do you find the number of neutrons in an atom using the periodic table?

Back

Subtract the atomic number (number of protons) from the atomic mass (rounded to the nearest whole number).

Front

What is the name of the element with atomic number 16?

Back

Sulfur.

Front

What does a vertical column in the periodic table represent?

Back

A group of elements with similar chemical properties.

Front

What is the total number of protons, neutrons, and electrons in a neutral atom of neon (atomic number 10, atomic mass 20)?

Back

30 (10 protons + 10 neutrons + 10 electrons).

Front

Which element has 5 valence electrons?

Back

Nitrogen.

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 the periodic table's rows (periods)?

Back

Elements in the same row have the same number of electron shells.

Front

How can you determine the number of valence electrons for main group elements?

Back

The group number (1-2, 13-18) corresponds to the number of valence electrons.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is the electron configuration for neon?

Back

1s² 2s² 2p⁶.