How do you calculate valency of an element?

Answer 1

The number of valence electrons is easily found. You can take a look at the Periodic Table, ignore the transistion metals and count. The first column has one valence electron, the second column has two and so on. The noble gases have eight--which makes sense because they tend to be chemically stable (fulfilling the octet rule).

Answer 2

in the periodoc table, there are 8 groups. if an element is in group 1, it has 1 valence electron, if it is in group 2, it has 2 valence electrons, and so forth. the only group this does not work for is group 8, in which the elements have no valence electrons, as they have full outer shells.

Answer 3

The valency of an element is determined by the number of electrons an atom needs to gain or lose to achieve a full outer shell of electrons. For main group elements, valency can be determined by looking at the group number on the periodic table. Transition metals may have variable valencies.Ionic charge can also be a clue to an element's valency.

Answer 4

If you look at the periodic table. inside one of the element's boxes, there will be numbers along the bottom or side. The last number tell you how many Valence electrons it has.

Answer 5

Valency of an element is the no of electrons it needs to complete its octet or combining capacity

Answer 6

Look at the periodic table. The first collumn has 1. The second has 2. The third has three and so on.

Answer 7

It is equivalent to the number of electrons for metals, and the number of remaining electrons to obtain a noble gas configuration for non metals.