issafares issafares

11-03-2021
Chemistry

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4 Which pair of ions is isoelectronic?
A Ca2+ and 02-
B Na+ and 02-
OC Lit and Cl-
OD Mg2+ and CI-

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harunahabeebalhaji harunahabeebalhaji

11-03-2021

Answer:

B. Na+ and O2-

Explanation:

Na+ plus has 10 electrons and O2- also has 10 electrons

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