Question

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Answer 1

Answer:

a) lithium → atomic number ⇨3

electronic configuration is

1s² 2s or. 2,1

b) carbon →atomic number ⇨6

electronic configuration is

1s² 2 s² 2p² or 2,4

c) oxygen →atomic number ⇨8

electronic configuration is

1s² 2s² 2p⁴ or 2,6

d) silicon →atomic number ⇨14

electroni configuration is

1s² 2s² 2p^6 3s² 3p² or 2,8,4

e) chlorine →atomic number ⇨17

electronic configuration is

1s² 2s² 2p^6 3s² 3p^5 or 2,8,7

f) calcium →atomic number ⇨20

electronic configuration is

1s² 2s² 2p^6 3s² 3p^6 4s² or 2,8,8,2