Periodic Trends

Question 1

Radius

Answer 1

The distance from it’s nucleus to the approximate outer boundary of the cloud-like region of it’s electrons.

Question 2

As you go down each group in the periodic table atomic size…

Answer 2

Tends increase

Question 3

As you go across a period in the periodic table atomic size…

Answer 3

Tends to decrease

Question 4

Ion

Answer 4

An atom that has gained or lost an electron (has charge).

Question 5

Cation

Answer 5

An atom that has lost electrons and positively charged.

Question 6

Anion

Answer 6

An atom that has gained electrons and is negatively charged.

Question 7

Ionization Energy

Answer 7

The energy that is required to remove an electron from an atom.

Question 8

First Ionization Energy

Answer 8

The ionization energy required to remove one electron from the outer energy level of the atom.

Question 9

What are the units used to measure first ionization energy?

Answer 9

KJ/mol

Question 10

As you go down each group in the periodic table, electron affinity…

Answer 10

Tends to decrease

Question 11

As you go across a period in the periodic table, electron affinity…

Answer 11

Tends to increase