electronic configuration Flashcards
1
Q
electronic configuration of potassium (39 - mass number) (19 - atomic number)
A
2:8:8:1
2
Q
electronic configuration of fluorine(19 - mass number)
(9 - atomic number)
A
2:7
3
Q
electronic configuration of calcium (40 mass number) (20 - atomic number)
A
2:8:8:2
4
Q
electronic configuration of neon (20 - mass number) (10 - atomic number)
A
2:8
5
Q
what is the atomic number made up of? (protons,nuetrons or electrons?)
A
protons
6
Q
what is the mass number made up of?
A
protons + nuetrons
7
Q
how to know the group of an element
A
the number of electrons in the outer shell
8
Q
how to know the period of an element
A
the number of shells
9
Q
what is the ion formed from potassium (2:8:8:1)
A
K^ 1+
10
Q
what is the ion formed from fluorine (2:7)
A
F ^ -
11
Q
what is the ion formed from calcium (2:8:8:2)
A
Ca ^ 2+
