1.

The valency of an element depends upon the

Answer»

total number of protons in an atom
mass number of an atom
total number of NEUTRONS is an atom
total number of ELECTRONS in the outer most shell of an atom

Solution :Valency is themeasure of the combiningcapacityofatoms of molecules. Thereforeit isthe capacityofanatom of asingleelementtoreactandcombinewithelectronsnumbersof ATOMSOF anotherelement . Theelectrons PRESENTIN theoutermostshell`//`ORBIT of an atom are calledvalence electrons. The valenceelectronstakepart inanychemicalreactionbecausetheoutermostorbitusuallycontainsmoreenergythan theoutermostorbitusually containsmore energythantheelectronspresentin otherorbits . the valencyof an elementdepends uponthe totalnumberof electrons in theoutermostshell of anatom.


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