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Author Question: Show how each chemical change leads to a stable octet. (a) Sulfur forms S2-. S (16 electrons): ... (Read 96 times)

CORALGRILL2014

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on: Aug 23, 2018
Show how each chemical change leads to a stable octet.
   
  (a) Sulfur forms S2-.
  S (16 electrons): 1s22s22p63s23p4
  S2- (18 electrons): 1s22s22p63s23p6
  (b) Magnesium forms Mg2+.
  Mg (12 electrons): 1s22s22p63s2
  Mg2+ (10 electrons): 1s22s22p6

Question 2

Write and compare the ground-state electron configurations for each pair of elements:
   
  (a) Carbon and silicon
  (b) Oxygen and sulfur
  (c) Nitrogen and phosphorus


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DHRUVSHAH

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Reply #1 on: Aug 23, 2018
Answer to Question 1

(a) Sulfur forms S2-.
S (16 electrons): 1s22s22p63s23p4
S2- (18 electrons): 1s22s22p63s23p6
(b) Magnesium forms Mg2+.
Mg (12 electrons): 1s22s22p63s2
Mg2+ (10 electrons): 1s22s22p6

Answer to Question 2

(a) Carbon and silicon

C (6 electrons) 1s2 2s2 2p2
Si (14 electrons) 1s2 2s2 2p6 3s2 3p2

Both carbon and silicon have four electrons in their outermost (valence) shells.

(b) Oxygen and sulfur

O (8 electrons) 1s2 2s2 2p4
S (16 electrons) 1s2 2s2 2p6 3s2 3p4

Both oxygen and sulfur have six electrons in their outermost (valence) shells.

(c) Nitrogen and phosphorus

N (7 electrons) 1s2 2s2 2p3
P (15 electrons) 1s2 2s2 2p6 3s2 3p3
Both nitrogen and phosphorus have five electrons in their outermost (valence) shells.


CORALGRILL2014

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Reply 2 on: Aug 23, 2018
Excellent

Dnite

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Reply 3 on: Yesterday
Gracias!

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