Question

Find out the valencies of first 10 elements

Answer 1

Answer:

(h)Hydrogen → 1

(hi)Helium → 0

(li)lithium → 1

(br)Beryllium → 2

(b)Boron → 3

(c)carbon → 4

(n)Nitrogen → 3 [8-5]

(o)oxygen →2 [ 8-6]

(f)fluorine→1 [ 8-7]

(ne)Neon → 0

Answer 2

Explanation:

• Hydrogen[H]-valency- 1
• Helium[He]-valency-0[noble gas]
• Lithium[Li]-valency-1
• Beryllium[Be]-valency-2
• Boron[B]-valency-3
• Carbon[C]-valency-4[it is a tetravalent element]
• Nitrogen[N]-valency-3
• Oxygen[O]-valency-2
• Fluorine[F]-valency-1
• Neon[Ne]-valency-0[noble gas]

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