Question

write volency and electronic configuration of 20 element???​

Answer 1

Explanation:Element Atomic Number ValencyValency of Hydrogen 1 1Valency of Helium 2 0Valency of Lithium 3 1Valency of Beryllium 4 2Valency of Boron 5 3Valency of Carbon 6 4Valency of Nitrogen 7 3Valency of Oxygen 8 2Valency of Fluorine 9 1Valency of Neon 10 0Valency of Sodium (Na) 11 1Valency of Magnesium (Mg) 12 2Valency of Aluminium 13 3Valency of Silicon 14 4Valency of Phosphorus 15 3Valency of Sulphur 16 2Valency of Chlorine 17 1Valency of Argon 18 0Valency of Potassium (K) 19 1Valency of Calcium 20 2Valency of Scandium 21 3Valency of Titanium 22 4Valency of Vanadium 23 5,4Valency of Chromium 24 2Valency of Manganese 25 7, 4, 2Valency of Iron (Fe) 26 2, 3Valency of Cobalt 27 3, 2Valency of Nickel 28 2Valency of Copper (Cu) 29 2, 1Valency of Zinc 30

Answer 2

Answer:

as the atomic number is 20

its electronic configuration is 2,8,8,2

its valence is 2