Chemistry, asked by yashawinirajput1409, 20 days ago

name 1st 30 elements, their symbols and valencies.​

Answers

Answered by pramodgaikwad82
1

Answer:

H(1) He(2) Li(3) Be(4) B(5) C(6) N(7) 0(8) F(9) Ne(10) Na(11) Mg(12) Al(13) Si(14) P(15) S(16) Cl(17) Ar(18) K(19) Ca(20) Sc (21) Ti(22) V(23) Cr(24) Mn(25) Fe(26) Co(27) Ni(28) Cu(29) Zn(30)

Explanation:

first 30 elements with their atomic no.

Answered by kothandaramansk196
1

Answer:

valency number is

1) 1

2) 0

3) 1

4) 2

5) 3

6) 4

7) 3

8) 2

9) 1

10) 0

11) 1

12) 2

13) 3

14) 4

15 ) 3

16) 2

17 ) 1

18) 0

19)1

20) 2

21) 3

22) 4

23) 4,5

24) 2

25)7,4,2

26)2,3

27) 3,2

28) 2

29) 2,1

30) 2

26)

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