Write the valency of E from EO3.
O is -2 each for -6 so E must be +6 since compounds are zero overall.
I have the one question it has the unknown element called E
To determine the valency of an element in a compound, you need to know the charges of the other elements present in the compound.
In the compound EO3, the valency of element E is the number of electrons that it loses or gains to achieve a stable electron configuration.
To find the valency of E in EO3, we first need to determine the valency of oxygen (O). Oxygen typically has a valency of -2 when it forms compounds.
Next, we consider the overall charge of the compound, which is represented by the subscript value following the element symbol. In this case, the "3" in EO3 implies that the compound has a charge of -3.
To calculate the valency of E, we need to balance the charges. Since there is only one oxygen atom present, the total charge contributed by oxygen is -2. Therefore, the element E must contribute +3 to balance it out (-2 from O + X from E = -3 overall charge).
Based on this, we can conclude that the valency of element E in EO3 is +3.