Atomic Structure Question 394

Question: Which of the following should be the number of electrons present in X2+ on the basis of electronic configuration, if the ion X3 has 14 protons-

Options:

A) 12

B) 14

C) 16

D) 18

Show Answer

Answer:

Correct Answer: A

Solution:

  • X3 has 14 protons, i.e., X also has 14 protons and therefore 14 electrons. X=14=1s2,2s22p6,3s23p2

X2+=1s2,2s12p6,3s2=12 electrons



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