what are the 20 elements, their valency and shells.
Answers
Answer:
The valency of the first 30 elements of the periodic table is given below.
Element Atomic Number Valency
Valency of Hydrogen 1 1
Valency of Helium 2 0
Valency of Lithium 3 1
Valency of Beryllium 4 2
Valency of Boron 5 3
Valency of Carbon 6 4
Valency of Nitrogen 7 3
Valency of Oxygen 8 2
Valency of Fluorine 9 1
Valency of Neon 10 0
Valency of Sodium (Na) 11 1
Valency of Magnesium (Mg) 12 2
Valency of Aluminium 13 3
Valency of Silicon 14 4
Valency of Phosphorus 15 3
Valency of Sulphur 16 2
Valency of Chlorine 17 1
Valency of Argon 18 0
Valency of Potassium (K) 19 1
Valency of Calcium 20 2
Valency of Scandium 21 3
Valency of Titanium 22 4
Valency of Vanadium 23 5,4
Valency of Chromium 24 2
Valency of Manganese 25 7, 4, 2
Valency of Iron (Fe) 26 2, 3
Elements Valency
Hydrogen. 1.
Helium. 0
Lithium. 1
Beryllium. 2
Boron. 3
Carbon. 4
Nitrogen. 3
Oxygen. 2
Flourine. 1
Neon. 0
Sodium. 1
Magnesium. 2
Aluminium. 3
Silicon. 4
Phosphorus. 3
Sulphur. 2
Chlorine. 1
Argon. 0
Potassium. 1
Calcium 2