Which two ions have the same electron configuration?

A) Na + and O2 - B) Li + and F - C) Ca2 + and Br - D) Na + and O3-

Question

Houston Duran

Chemistry

10 October, 10:18

Which two ions have the same electron configuration?

A) Na + and O2 - B) Li + and F - C) Ca2 + and Br - D) Na + and O3-

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Answers (2)

Know the Answer?

Cole Flynn · Answer 1

Cole Flynn 10 October, 10:29

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Morgan Spence · Answer 2

Answer: A) Na + and O2-

Explanation:

To know the electronic configuration, one has to determine the numbers of electrons present in each atom.

Na + means a sodium atom that has lost one valence electron. A Sodium atom initially has 11 electrons, but having lost an electron making it 10 electrons remaining with electron configuration of 1s2 2s2 2p6.

O2 - means oxygen atom that has gained two valence electrons. An oxygen atom initially has 8 electrons, having gained two electrons makes it 10 electrons with electron configuration of 1s2 2s2 2p6. same as Na+

The purpose of gaining or losing electrons is to attain a stable duplet or octet structure.

Which two ions have the same electron configuration?A) Na + and O2 - B) Li + and F - C) Ca2 + and Br - D) Na + and O3-

Which two ions have the same electron configuration?

A) Na + and O2 - B) Li + and F - C) Ca2 + and Br - D) Na + and O3-