Periodic Table of Elements Flashcards
1
Q
Hydrogen energy levels
A
1
2
Q
Energy level 1
A
Hydrogen
3
Q
Hydrogen standard state
A
Gas
4
Q
Hydrogen series
A
Nonmetal
5
Q
Helium series
A
Noble gases
6
Q
Helium energy levels
A
2
7
Q
Helium standard state
A
Gas