Advertisements
Advertisements
प्रश्न
Give a reason – Magnesium [2, 8, 2] has valency 2+.
उत्तर
Valency of magnesium is 2+, Mg [2, 8, 2]
Electronic configuration of Mg is 2, 8, 2 i.e. there are 2 valence electrons which Mg can lose and achieve the stable configuration of nearest noble gas Neon.
Hence is cation Mg2+ has valency 2+.
APPEARS IN
संबंधित प्रश्न
Give the names and symbols of five familiar substances which you think are elements.
State what a chemical formula denotes.
Give the symbol and the number of atoms of the following elements present in carbon dioxide.
Give the symbol of the following element:
Aluminium
State the type of element for the following:
Chlorine
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Mercury
write symbol with the variable valency
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Zincate
Write the symbols for the following elements and classify them as solid, liquid and gas. Aluminum, Carbon, Chlorine, Mercury, Hydrogen and Helium
Write the symbols for the following elements.
- Oxygen
- Gold
- Calcium
- Cadmium
- Iron
In the same way in chemistry, each element is denoted by a ______.