Periodic Table Trends

Front

Halogens have ________ valence electron(s)

Back

7

Front

Which of the noble gases has the smallest atomic radius?

Back

He

Front

How many valence electrons are in a full valence (stable) shell?

Back

8

Front

What are the rows in a Periodic Table called?

Back

Periods

Front

How does atomic radius change as you move across a period (from left to right)?

Back

It decreases.

Front

What are the vertical columns in the Periodic Table called?

Back

Groups or Families.

Front

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

Back

It increases.

Front

What is the trend in ionization energy as you move down a group?

Back

It decreases.

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 Law?

Back

It states that the properties of elements are a periodic function of their atomic numbers.