You will have to check the valency from a Periodic Table. It will be written on the top right hand corner. e.g., O2
Overall the valency is 2.5. 2 of the S atoms have a valency of 2 and 2 of the S atoms have a valency of 3.
The valency of M in M3O4 is +3. This is because there are three M atoms for every four O atoms, so each M atom must have a valency of +3 to balance the charges in the compound.
Valency
The valency of phosphorus trichloride is 3. Phosphorus forms three covalent bonds with chlorine atoms in this compound, resulting in a valency of 3.
by knowing the no. of electorns in its outermost shell
those atoms have 3 valency is called trivalent.
those atoms have 3 valency is called trivalent.
The valency of oxygen in this scenario would be 2. Oxygen typically has a valency of 2 when it forms compounds.
The valency of Fe in Fe2O3 is +3. This is because oxygen typically has a valency of -2 and there are three oxygen atoms present in Fe2O3, making the overall charge -6. To balance the charge, the iron (Fe) atoms must have a valency of +3.
Valency refers to the number of electrons an atom can donate, accept, or share in a chemical reaction. Atoms with a high valency tend to be more reactive because they can form more bonds with other atoms to achieve a stable electron configuration. On the other hand, atoms with low valency are less reactive because they are already close to achieving a stable electron configuration.
The valency of the silicate ion is -4, meaning it has a charge of -4. This is because the silicate ion is made up of one silicon atom (which has a valency of +4) and four oxygen atoms (each with a valency of -2).
The valency of phosphorus in PH3 is 3, as it forms three covalent bonds with three hydrogen atoms in the molecule.