electrons and energy levels Flashcards
1
Q
how do we determine the amount of electrons?
A
by looking at the atomic number
2
Q
how do we determine the amount of valence electrons?
A
by looking at which column the element is at
3
Q
how do we determine the amount of energy levels?
A
by looking at which row the element is in.
4
Q
how do you get the valency number?
A
by substracting the amount of valence electrons from 8
ex: 8 - 3 = 5
5
Q
how do you know if it’s stable or not?
A
it has 8 valence electrons when it’s stable, and doesn’t when it’s not stable.
6
Q
determine the amount of electrons, valence electrons, valency number, stability, and number of energy levels in potassium (K)
A
amount of electrons: 19 valence electrons: 1 valency number: 7 stability: not stable number of energy levels: 4
