Front

How many valence electrons does group 13 have?

Back

3

Front

How many valence electrons does group 2 have?

Back

2

Front

Which classification of elements are gases or dull brittle solids and poor conductors?

Back

Nonmetals

Front

Which classification of elements are shiny, silvery solids and good conductors of heat and electricity?

Back

Metals

Front

What are the horizontal rows on the periodic table called?

Back

Periods

Front

What are the vertical columns on the periodic table called?

Back

Groups

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?

Back

It organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What are metalloids?

Back

Elements that have properties of both metals and nonmetals.

Front

What is the general trend of electronegativity in the periodic table?

Back

Electronegativity increases across a period and decreases down a group.