₁H, ₇N, ₂₀Ca, ₁₆S, ₄Be, ₁₈Ar Which of these elements belong to the second group? Write down the electronic configuration of the elements from the given atomic numbers.
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Out of the given elements, those belonging to the Periods 2 are ⇒
1. Beryllium(Be)
2.Nitrogen (Na)
S, and Ar belongs to the Periods 3, H belongs to the Periods 1 and Ca belongs to the Periods 4.
The Electronic Configuration of the given elements are,
H = 1
E.C. = 1s¹
Be = 4
E.C. = 1s², 2s²
N = 7
E.C. = 1s², 2s², 2p³
Ca = 20
E.C. = 1s²,2s²,2p⁶,3s²,3p⁶,4s²
S = 16
E.C. = 1s²,2s²,2p⁶,3s²,3p⁴
Ar = 18
E.C. = 1s²,2s²,2p⁶,3s²,3p⁶
[Note ⇒ E.C. represents Electronic Configuration].
Hope it helps.
1. Beryllium(Be)
2.Nitrogen (Na)
S, and Ar belongs to the Periods 3, H belongs to the Periods 1 and Ca belongs to the Periods 4.
The Electronic Configuration of the given elements are,
H = 1
E.C. = 1s¹
Be = 4
E.C. = 1s², 2s²
N = 7
E.C. = 1s², 2s², 2p³
Ca = 20
E.C. = 1s²,2s²,2p⁶,3s²,3p⁶,4s²
S = 16
E.C. = 1s²,2s²,2p⁶,3s²,3p⁴
Ar = 18
E.C. = 1s²,2s²,2p⁶,3s²,3p⁶
[Note ⇒ E.C. represents Electronic Configuration].
Hope it helps.
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