Atomic Symbols
Most Common Isotope
Valence Electrons
Electron Configuration
Lewis Structure
100

The atomic mass number of this element

What is 40?

100

The most common isotope of 


What is Ne-20?

100

The number of valence electrons carbon has

What is 6?

100

The electron configuration of aluminum

What is 2,8,3?

100

The Lewis structure for chlorine

What is



200

The number of protons in this atom 


What is 10?

200

The most common isotope for this element


What is Hg-201?

200

The number of valence electrons neon has

What is 8?

200

The electron configuration silicon

What is 2,8,4?

200

The Lewis Structure for sulfur

What is 


300

The number of neutrons in this atom


What is 61?
300

the most common isotope of this element


What is Ca-40?

300
The number of valence electrons in boron

What is 5?

300

The electron configuration of fluorine?

What is 2,7?

300

The Lewis Structure of nitrogen

What is

400

The number of electrons in a neutral charged atom of this element


What is 79?

400

The most common isotope for this element 


What is C-12?

400

the number of valence electrons in oxygen

What is 6?

400

The electron configuration for Argon

What is 2,8,8?

400
The Lewis structure for potassium

What is


500

The number of neutrons in this atom



What is 125?

500

The most common isotope of this element



What is Li-7?

500

The number of valence electrons sodium has

What is 1

500

The electron configuration for phosphorous

What is 2,8,5?

500

The Lewis Structure for beryllium

What is