If an element, X, can form an oxide that has theformula X2O3, then element X would most likely be located on the Periodic Table in the same group as
(1) Ba (3) In
(2) Cd (4) Na

2) Cadmium (Cd) : Atomic no: 48: [tex]Kr5s^24d^{10}[/tex] : In order to complete its octet, it needs to donate 2 electrons, and thus the valency is 2.

3) Indium (In): Atomic no: 49: [tex]Kr5s^25p^{1}[/tex] : In order to complete its octet, it needs to donate 3 electrons, and thus the valency is 3.

4) Sodium (Na): Atomic no: 11: [tex]Ne3s^1[/tex] : In order to complete its octet, it needs to donate 1 electron, and thus the valency is 1.

So the given element could only belong to the group containing Indium (In) as all the elements in the same group exhibit similar valency.

If an element, X, can form an oxide that has theformula X2O3, then element X would most likely be located on the Periodic Table in the same group as (1) Ba (3) In (2) Cd (4) Na

Answer :

Other Questions

If an element, X, can form an oxide that has theformula X2O3, then element X would most likely be located on the Periodic Table in the same group as
(1) Ba (3) In
(2) Cd (4) Na