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first we will make the shells as required then if the outer shell is going to have less than 8 electrons we will minus it from 8 and there comes our valancy

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How calculate valency?

Valency is calculated in this way... 1. Find atm no of that element. 2. Write down electronic configuration. 3. Take the valence shell electron number. 4. The number of electrons to be lost are added as the valency.


What is the valency and electronic configuration of oxygen?

Electron configuration for oxygen (O) is 1s2 2s2 2p4. The valency is 2-.


Why some elements in the periodic table have more than one valency?

because the valency is no of electrons present in last shell and different element have different electronic configuration.


What is the valency for Rubidium?

The valency for Rubidium is +1 because it readily loses one electron to achieve a stable electronic configuration.


How do you calculate valency of bromide?

You have to use configuration of electrons (spdf). In this case it will only go up to d. if we use the short hand configuration then bromine is 3d10 4s2 4p5. remember d goes before everything.


What is the highest valency element?

The highest valency element is oxygen, with a valency of 2. The valency of an element represents the number of bonds it can form with other elements. Oxygen typically forms bonds by gaining two electrons to achieve a stable electron configuration.


How do you find out valency of manganese?

The valency of manganese can be determined by looking at its electron configuration. Manganese typically forms compounds in which it has a valency of +2, +3, +4, +6, or +7 depending on the specific compound it forms. This valency corresponds to the number of electrons that manganese can lose or gain to achieve a stable electron configuration.


How do you find valencies of an atom using atomic number or electronic configuration?

The number of electrons on the external level is generally equivalent to valency.


What is the valency of the last element in the 3rd group of modern periodic table?

The last element in the 3rd group of the modern periodic table is gallium, with the symbol Ga. Gallium has a valency of +3, meaning it tends to lose three electrons to achieve a stable electron configuration.


Does sodium three electrons in its valence shell yes or no?

no it has 1 electron in it's vallence.. sinc it is 1st group element and it has total 11 atoms so it's electronic configuration is (2,8,1).. so it's valency is 1


What is the valency of the smallest element?

the smallest element is hydrogen of which its valency is one.


What is the valency of elements?

The valency of an element is its combining power with other elements to form compounds. It is determined by the number of electrons an atom needs to gain, lose, or share to achieve a stable electron configuration. The valency of elements can vary depending on the number of electrons in their outermost energy level.