How do you find the valency of an element?
Answers
Explanation:
Use the periodic table to find the atomic number. For the first example, let’s use carbon. The atomic number is 6, which means 6 protons and 6 electrons.
The inner orbital of electrons has 2 electrons, so the next orbital has 4 (6 – 2 = 4).
The outer orbital, with 4 electrons moving in various ways, circling the nucleus, can create 4 single bonds.
You would say that the valency of carbon is 4.
Answer:
find the atomic number and write the electronic configuration the number and the electrons present in the outermost shell .if there are 1,2,3 it will be a metal and it will lose electrons .it will lose one electron then it will have plus one valency,if it will lose two electrons it will have plus 2 valency,if it will lose 3 electrons ,it will have plus 3 valency, and if it has 4 electrons in its outermost shell then like carbon then it can I have covalent bond which means that it can it will share electrons and if it has 5 6 or 7 electrons in its valence shell for the outermost shell then if it has 5 electrons it will gain 3 electrons and then it will have -3 valency it if it will have 6 electrons it will gain two electrons to attend the stable electronic configuration then it will have -2 valency and it has 7 electrons it gain 1 electron and it will have -1 valency and if the outermost shell has 8 electrons this mean that it is the noble gas and it is chemically unreactive and it will have zero valency.