Unit 2a review

Front

What are valence electrons?

Back

The number of electrons in the outermost shell of an atom.

Front

If an atom loses electrons, what happens to its charge?

Back

The charge will be positive.

Front

Which atom has the largest atomic radius: potassium, rubidium, francium, or cesium?

Back

Francium has the largest atomic radius.

Front

What are good conductors of electricity and often shiny solids at room temperature?

Back

Metals are good conductors of electricity and are often shiny solids at room temperature.

Front

What is the correct symbol for a Bromine ion that gains 1 electron?

Back

Br⁻¹ is the correct symbol for a Bromine ion.

Front

What is the definition of an ion?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What happens to the charge of an atom when it gains electrons?

Back

The charge becomes negative.

Front

What are the three main types of elements on the periodic table?

Back

Metals, nonmetals, and metalloids.

Front

What is the periodic trend for atomic radius as you move down a group?

Back

Atomic radius increases as you move down a group.

Front

What is the periodic trend for ionization energy as you move across a period?

Back

Ionization energy generally increases as you move from left to right across a period.