Periodic Table & Trends

Front

What are the vertical columns in the Periodic Table called?

Back

Groups

Front

How many valence electrons does an atom of Argon (Ar) have?

Back

8

Front

What is electronegativity?

Back

The ability of an atom to attract/accept electrons.

Front

How is the Modern Periodic Table of Elements arranged?

Back

By atomic number.

Front

What happens to the size of atoms as you move across the periodic table?

Back

Atoms tend to get smaller because they have more protons.

Front

What are the horizontal rows in the Periodic Table called?

Back

Periods

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how an atom can bond with others.

Front

What trend is observed in electronegativity as you move across a period?

Back

Electronegativity increases.

Front

What is the trend in atomic radius as you move down a group in the Periodic Table?

Back

Atomic radius increases.

Front

What is the definition of atomic number?

Back

The number of protons in the nucleus of an atom.