Chemistry, asked by blackrose13209, 4 days ago

Chapter: Ionization Energy

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Answered by jakharn038

0

Answer: Element A=2,7

Element B=2,8,8

Answered by mamtabirla543

0

Answer:

For Element A,

Atomic Number = 9 (Fluorine)

Configuration = 1s² 2s² 2p5

For Element B,

Atomic Number = 18 (Potassium)

Configuration = 1s² 2s² 2p6 3s² 3p6 4s¹

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