electron energy levels Flashcards
what would helium’s electronic structure look like?
4
He
2
[2]
2 protons in the nucleus
2 neutrons in the nucleus
1 energy level with 2 electrons in
electrons exist where on the atom?
energy levels/shells
what is the maximum number of electrons in the first shell, second shell, 3rd shell and 4th shell
2 electrons in the 1st shell
8 electrons in the 2nd shell
8 electrons in the 3rd shell
18 electrons in the 4th shell
what would the electronic structure of lithium be?
7
Li
3
[2,1]
3 protons in nucleus
2 electrons in first shell
1 electron in second shell
what does the number of electrons on the outer energy level tell us?
the group number that the element is in
the element Boron, has an electronic structure of
[2,3]
what group is boron in judging from its electronic structure?
outer energy level has 3 electrons therefore boron is in group 3
what is the electronic energy level for the element carbon?
12
C
6
[2,4]
judging from the electronic structure of Neon
what group is it in
[2,8]
group 0
all the energy levels are full so it would be in group 0 (the noble gases)
what is the electronic structure of this ion?
17
C 2+
8
[2,4]
