K3M 2012 Problem 1

Chemistry Level pending

X X is an element in period 4 of the Periodic Table. It forms an oxide with formula X O XO . What is the electron arrangement of the ion of element X X ?

2.8.8.2 2.8.8.8 2.8.8 2.8.6

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1 solution

Pankaj Joshi
Jul 6, 2014

Its Calcium.

you are giving electronic configuration of calcium atom. the calcium ion configuration is 2 8 8 only. you get it when calcium atom loses 2 electrons.

Brahmam Meka - 6 years, 11 months ago

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