Question

valency of elements ?

Answer 1

The combining Capacity of Element is called its Valency. In simple language, how much electrons can an element  lose or gain electrons during bonding is called its valency. 

Answer 2

No.  S ELEMENT VALENCE

1 H Hydrogen 1, 0, -1

2 He Helium         0

3 Li Lithium         1, -1

4 Be Beryllium 2

5 B Boron         3, 2, 1

6 C Carbon         4, 3, 2, 1, -1, -2, -4

7 N Nitrogen         5, 4, 3, 2, 1, 0, -1, -2, -3

8 O Oxygen         2, 1, 0, -1, -2

9 F Fluorine         0, -1

10 Ne Neon         0

11 Na Sodium         1, -1

12 Mg Magnesium 2

13 Al Aluminum 3, 1

14 Si Silicon         4, 3, 2, 1, -1, -2, -4

15 P Phosphorus 5, 4, 3, 2, 1, 0, -1, -2, -3

16 S Sulfur         6, 5, 4, 3, 2, 1, 0, -1, -2

17 Cl Chlorine         6, 5, 4, 3, 2, 1, 0, -1, -2

18 Ar Argon         0

19 K Potassium 1, -1

20 Ca Calcium         2

21 Sc Scandium 3, 2, 1

22 Ti Titanium         4, 3, 2, 0, -1, -2

23 V Vanadium 5, 4, 3, 2, 1, 0, -1, -2

24 Cr Chromium 6, 5, 4, 3, 2, 1, 0, -1, -2, -3, -4

25 Mn Manganese 7, 6, 5, 4, 3, 2, 1, 0, -1, -2, -3

26 Fe Iron                 6, 5, 4, 3, 2, 1, 0, -1, -2

27 Co Cobalt         5, 4, 3, 2, 1, 0, -1

28 Ni Nickel         6, 4, 3, 2, 1, 0, -1

29 Cu Copper         4, 3, 2, 1, 0

30 Zn Zinc                 2, 1, 0

31 Ga Gallium         3, 2, 1

32 Ge Germanium 4, 3, 2, 1

33 As Arsenic         5, 3, 2, -3

34 Se Selenium 6, 4, 2, 1, -2

35 Br Bromine         7, 5, 4, 3, 1, 0, -1

36 Kr Krypton         2, 0

37 Rb Rubidium 1, -1

38 Sr Strontium 2

39 Y Yttrium         3, 2

40 Zr Zirconium 4, 3, 2, 1, 0, -2

41 Nb Niobium         5, 4, 3, 2, 1, 0, -1, -3

42 Mo Molybdenum 6, 5, 4, 3, 2, 1, 0, -1, -2

43 Tc Technetium 7, 6, 5, 4, 3, 2, 1, 0, -1, -3

44 Ru Ruthenium 8, 7, 6, 5, 4, 3, 2, 1, 0, -2

45 Rh Rhodium         6, 5, 4, 3, 2, 1, 0, -1

46 Pd Palladium 4, 2, 0

47 Ag Silver         3, 2, 1, 0

48 Cd Cadmium 2, 1

49 In Indium         3, 2, 1

50 Sn Tin                 4, 2, -4

51 Sb Antimony 5, 3, -3

52 Te Tellurium 6, 5, 4, 2, 1, -2

53 I Iodine         7, 5, 3, 1, 0, -1

54 Xe Xenon         8, 6, 4, 3, 2, 0

55 Cs Cesium         1, -1

56 Ba Barium         2

57 La Lanthanum 3, 2

58 Ce Cerium         4, 3, 2

59 Pr Praseodymium 4, 3, 2

60 Nd Neodymium 4, 3, 2

61 Pm Promethium 3

62 Sm Samarium 3, 2

63 Eu Europium 3, 2

64 Gd Gadolinium 3, 2, 1

65 Tb Terbium         4, 3, 1

66 Dy Dysprosium 4, 3, 2

67 Ho Holmium         3, 2

68 Er Erbium         3

69 Tm Thulium         3, 2

70 Yb Ytterbium 3, 2

71 Lu Lutetium   3

72 Hf Hafnium   4, 3, 2, 1

73 Ta Tantalum 5, 4, 3, 2, 1, -1, -3

74 W Tungsten 6, 5, 4, 3, 2, 1, 0, -1, -2, -4

75 Re Rhenium  7, 6, 5, 4, 3, 2, 1, 0, -1, -3

76 Os Osmium   8, 7, 6, 5, 4, 3, 2, 1, 0, -2

77 Ir Iridium      6, 5, 4, 3, 2, 1, 0, -1

78 Pt Platinum  6, 5, 4, 2, 0

79 Au Gold         7, 5, 3, 2, 1, 0, -1

80 Hg Mercury   2, 1

81 Tl Thallium   3, 1

82 Pb Lead         4, 2

83 Bi Bismuth   5, 3, 1, -3

84 Po Polonium   6, 4, 2, -2

85 At Astatine   7, 5, 3, 1, -1

86 Rn Radon      2, 0

87 Fr Francium     1

88 Ra Radium    2

89 Ac Actinium   3

90 Th Thorium   4, 3, 2

91 Pa Protactinium 5, 4, 3

92 U Uranium         6, 5, 4, 3, 2

93 Np Neptunium 7, 6, 5, 4, 3, 2

94 Pu Plutonium 7, 6, 5, 4, 3, 2

95 Am Americium 7, 6, 5, 4, 3, 2

96 Cm Curium     6, 5, 4, 3, 2

97 Bk Berkelium 4, 3, 2

98 Cf Californium 5, 4, 3, 2

99 Es Einsteinium 4, 3, 2

100 Fm Fermium         4, 3, 2

101 Md Mendelevium 3, 2, 1

102 No Nobelium 3, 2

103 Lr Lawrencium 3, 2

104 Rf Rutherfordium 4, 3

105 Db Dubnium          5, 4

106 Sg Seaborgium 6, 5, 4

107 Bh Bohrium   7, 6, 5, 4, 3

108 Hs Hassium   8, 7, 4, 3, 2

109 Mt Meitnerium 6, 5, 4, 3, 2, 1

110 Ds Darmstadtium 6, 5, 4, 3, 2, 1

111 Rg Roentgenium  3, -1

112 Cn Copernicium  2, 1

113 Nh Nihonium 1

114 Fl Flerovium 2

115 Mc Moscovium 3, 1

116 Lv Livermorium 4, 2

117 Ts Tennessine unknown

118 Og Oganesson 8, 6, 4, 2

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