Hi
Can anyone help me determine the valency of selenium in hydrogen selenide... how do you work this out ???
Thank you ..
Freddo ..
H2Se is the formula for hydrogen selenide. The valence of H is +1, there are two of them for a total charge of +2. For the compound to be zero, and it must be zero, the Se must have a valence of -2.
Thank you Dr Bob
To determine the valency of selenium in hydrogen selenide (H2Se), you can use the concept of charge neutrality. Charge neutrality means that in a compound, the sum of the charges of all elements must add up to zero.
In H2Se, hydrogen (H) has a known valency of +1. There are two hydrogen atoms, so the total charge contributed by hydrogen is +2 (+1 + +1 = +2).
Since the overall charge of hydrogen selenide is zero, selenium (Se) must have a valency that balances out the hydrogen charge. The valency of Se can be calculated by subtracting the charge contributed by hydrogen from zero. In this case, 0 - (+2) = -2.
Therefore, the valency of selenium in hydrogen selenide is -2.