Periodic Table of Elements

Front

What are the most reactive nonmetals?

Back

Halogens are the most reactive nonmetals.

Front

What are the vertical columns on the periodic table called?

Back

They are called groups.

Front

Which group of elements has 1 valence electron?

Back

Group 1 elements have 1 valence electron.

Front

How is the Modern Periodic Table of Elements arranged?

Back

It is arranged by atomic number.

Front

In which group is Sodium (Na) found?

Back

Sodium (Na) is found in group 1.

Front

What are the horizontal rows on the periodic table called?

Back

They are called periods.

Front

What is the significance of atomic number in the periodic table?

Back

The atomic number represents the number of protons in an atom's nucleus.

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals.

Front

What group contains the noble gases?

Back

Noble gases are found in group 18.

Front

What is the general trend of reactivity in alkali metals?

Back

Reactivity increases as you move down the group.