electron arrangment patterns please get right

1. how many electrons are in the outermost shell of an atom of phospherous(P) consult periodic table

30,974

15

3

5

2 How many valence electrons are in an atom of strontium(S) consult periodic table

5

47,90

22

2

3. cesium(Cs) has one valence electron, and that electron is located in the sixth subshell, in which group and period is ceium located

group2A, period 7

group7A, period 7

group8A, period6

group1A, period 6

4. in which orbital block are the valence electrons of gallium (Ga) located consult the periodic table and the block

p

s

f

d

5. in which orbital block will you find the element with an electrically neutral atom and electron configuration of 1s^2 2s^2 2p^6

f

p

d

s

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