The electron configuration of an element, X, is [He]3s23p1 . The formula of the most probable ionic compound that this element will form with O is The electron configuration of an element, X, is [He]3s23p1 . The formula of the most probable ionic compound that this element will form with O is:. a) X3O2
b) X2O
c) XO
d) X2O3

Option d) X2O3

Explanation:

The following data were obtained from the question:

The electronic configuration of the element X => [He]3s23p1

Now, let us write the electronic configuration of oxygen. This is given below:

O(8) => 1s2 2s2 2p4

Considering the electronic configuration of the element X, we can the element has 3 electrons in the outermost shell. Oxygen on the other hand has 2 electrons in the outermost shell. During bonding, there will be exchange of ion as shown below:

X³ + O²¯—> X2O3

So, the formula of the most probable ionic compound that this element will form with O is X2O3

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