Question

how to find valency of hydrogen helium lithium beryllium boron carbon nitrogen Oxygen fluorine and neon sodium magnesium aluminium silicon phosphorus Sulphur chlorine organ please send me this answer with picture and clear picture not blood picture​

Answer 1

Answer:

Explanation:

It is simple to find the valancy of atoms

Simply complete the electronic configuration of each atom, the electrons which are being left in last subshell it would be the valancy of that atom,

for example Hydrogen has 1 atomic number, so its valany is 1

and carbon atom has 6 atomic number its configuration is 1s2, 2s2, 2p4, so its last subshell having 4 electron that's why carbon's valacy is 4 and for Chlorine its atomic number is 17. Its electronic configuration is 1s2, 2s2, 2p6, 3s2, 3p5. its last subshell to befilled only by 1 electron to get stability, so its valancy is 1

Answer 2

Answer:

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Explanation:

it's not blood it's blur picture