(re-do) chemistry quiz Flashcards
1
Q
Who made the periodic table?
A
Dmitri Mendeleev
2
Q
Who’s the”father” of the modern periodic table?
A
Henry Mosely
3
Q
What direction do groups go on the periodic table?
A
Up and down
4
Q
What direction do periods go on the periodic table?
A
Left and right
5
Q
What are valence electrons?
A
An electron in the highest occupied energy level of an atom
