Periodic Table Trends

Front

What are the radioactive elements with atomic numbers from 90 to 103 called?

Back

the actinides

Front

How are an element's valence electrons different from other electrons?

Back

They are located in the outer energy shell (ring/level).

Front

On the periodic table as you go across a period, from left to right, the number of protons and the atomic mass will both _____.

Back

increase

Front

What is the mass number of the element Germanium (Ge) with 32 protons, 34 neutrons, and 36 electrons?

Back

66

Front

Potassium [K #19] has energy shell(s).

Back

4

Front

When a neutral atom GAINS an ​electron it becomes ___ .

Back

negative

Front

An atom with a positive charge (Na+) is called a ____.

Back

cation

Front

The noble gases have the _____ electron affinity (attract electrons).

Back

same

Front

This is a model of the element Oxygen. It has ​ ​ ____ electrons.

Back

10

Front

This is a model of the element Oxygen. It has ​ ​ ____ energy levels

Back

2