Question

write 30 elements with their valencies and symbol

Answer 1

these are the 30 elements with their valencies and symbols

Answer 2

$\huge\mathfrak\red{Valency :}$


Valency tells us how many electrons does an atom need to loose, gain and share to attain a stability to form a compound.

$\textbf{Valency of First 30 elements are :}$

1) Hydrogen (H) :- +1

2) Helium (He) :- 0

3) Lithium (Li) :- +1

4) Beryllium (Be) :- +2

5) Boron (B) :- +3

6) Carbon (C) :- ±4

7) Nitrogen (N) :- -3

8) Oxygen (O) :- -2

9) Fluorine (F) :- -1

10) Neon (Ne) :- 0

11) Sodium (Na) :- +1

12) Magnesium (Mg) :- +2

13) Aluminium (Al) :- +3

14) Silicon (Si) :- ±4

15) Phosphorus (P) :- -3,-5

16) Sulphur (S) :- -2

17) Chlorine (Cl) :- -1

18) Argon (Ar) :- 0

19) Potassium (K) :- +1

20) Calcium (Ca) :- +2

21) Scandium (Sc) :- +3

22) Titanium (Ti) :- +4

23) Vanadium (V) :- +5

24) Chromium (Cr) :- +2, +3, +6

25) Manganese (Mn) :- +2, +4, +7

26) Iron (Fe) :- +2, +3

27) Cobalt (Co) :- +2

28) Nickel (Ni) :- +2, +3

29) Copper (Cu) :- +1, +2

30) Zinc (Zn) :- +2

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