Question

can you please answer the table in the given attachment please

Answer 1

here is your answer
1:hydrogen 1s1(e.c)
helium:1s2
lithium:2s1
berrylium:1s2,2s2
boron:1s2,2s2,3s1
carbon:1s2,2s2,3s2
nitrogen:1s2,2s2,3s2,3p1
oxygen:1s2,2s2,3s2,2p2
fluorine:1s2,2s2,3s2,2p3
neon:1s2,2s2,3s2,2p4
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Answer 2

H = (1) = 1
He = (2) = 2
L = (2,1) = 1
Be = (2,2) = 2
B = (2,3) = 3
C = (2,4) = 4
N = (2,5) = 3
O = (2,6) = 2
F = (2,7) = 1
Ne = (2,8) = no valency
Na = (2,8,1) = 1
Mg = (2,8,2) = 2
Al = (2,8,3) = 3
Si = (2,8,4) = 4
P = (2,8,5) = 3
S = (2,8,6) = 2
Cl = (2,8,7) = 1
Ar = (2,8,8) = no valancy
K = (2,8,8,1) = 1
Ca = (2,8,8,2) = 2

here first one is molecular formula
second one electronic confirguration
third one valency

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