The electronic configuration of the elements A and B are 1s2, 2s2, 2p6, 3s2, and 1s2, 2s2, 2p5, respectively. The formula of ionic compound that can be formed between these elements is ..........?
Answers
Answer:
N2O2 is an ionic formula
The formula for the ionic compound that can be formed between elements A and B is AB₂.
• From the electronic configuration of element A, it can be stated that the number of valence electrons in A is 2 (2, 8, 2).
• From the electronic configuration of element B, it can be stated that the number of valence electrons in B is 7 (2, 7).
• Now, A having only two valence electrons, will try to donate these to an electron deficient element in order to attain octet.
• B, having 7 valence electrons, is deficient of only one electron to complete its octet.
• So, one atom of B can readily gain one of the two electrons from A, and another atom of B can also gain the remaining one electron from A to complete its octet.
• Therefore, on the whole, two atoms of B will gain one electron each from a single atom of A.
• Therefore, the formula for the ionic compound that can be formed between A and B is AB₂.