Chemistry
The characteristic of an electrovalent compound is that :
- It is formed by sharing of electrons
- It is formed between metals and non-metals
- It is formed between two non-metals
- It often exists as a liquid.
Answer
It is formed between metals and non-metals
Reason — Bonds formed between metals and non-metals are electrovalent bonds.
Metals have 1, 2 or 3 electrons in their valence shell. They have a tendency to lose their valence electrons. So they combine with non-metals which have 5, 6 or 7 electrons in their valence shell and thus have a tendency to gain electron(s) and form electrovalent bonds.
Sharing of electrons leads to covalent bonds, not electrovalent ones. Two non-metals usually form covalent bonds by sharing electrons. Ionic compounds are generally solids with high melting and boiling points due to strong electrostatic forces.
Related Questions
Three pair of electrons are shared in a molecule of:
- Oxygen
- Hydrogen
- Methane
- Nitrogen
In the formation of CCl4 molecule, the nearest noble gas configuration attained by carbon and chlorine respectively are :
- Argon and neon
- Helium and neon
- Neon and argon
- Helium and argon
When a metal atom becomes an ion:
- It loses electrons and is oxidized.
- It gains electrons and is reduced.
- It gains electrons and is oxidized
- It loses electrons and is reduced.
An element Y has 2 electrons in the 2nd orbit and X has 7 electrons in its 3rd orbit. The compound formed between them has the formula:
- XY2
- YX2
- YX
- Y7X2