The atomic number of lithicm , boron and sulphur is 3, 5and 16 respectivy what will be their valency
Answers
Answer:
We all know that the chemical formula for water is H2O. How many times have we wondered why it is written as “H2O” and not something else? What is the reason for this particular formula? The answer to the above question is “Valency”. Let us know more about Valency and how it helps in determining a formula!
Answer:
Lithium - 1
Boron - 3
Sulphur - 2
Explanation:
lithium has atomic no 3 it can accommodate 2 electrons in its first shell that is k shell so there is only one electron in l shell it can loose it easily so its valency is 1.
Boron has atomic number 5 its first shell can accommodate 2 electrons and it has 3 valence electrons and it can loose its three electrons easily.
Sulphur has atomic no 16 its first shell can accommodate 2 electrons second shell can accommodate 8 electrons and third shell has 6 electrons. it is difficult to loose 6 electrons so it will gain 2 electrons to complete its octet