Chemistry
The bond formed between a metal and non-metal is called:
- Polar covalent
- Electrovalent
- Covalent
- Coordinate
Answer
Electrovalent
Reason — Metals become positively charged when they give away electrons and non-metals become negatively charged when they accept electrons. Due to electrostatic attraction between the two oppositely charged ions electrovalent (ionic) bonds are formed.
Polar covalent bond is formed between two non-metals with unequal sharing of electrons. Covalent bond is formed by sharing of electrons between two non-metals. Coordinate bond is a type of covalent bond where both electrons are donated by one atom.
Related Questions
What do you understand by redox reactions ? Explain oxidation and reduction in terms of loss or gain of electrons.
Potassium (at No. 19) and chlorine (at No.17) react to form a compound. Explain on the basis of electronic concept :
(i) oxidation
(ii) reduction
(iii) oxidising agent
(iv) reducing agent.
The most ionic compound is:
- NaCl
- KBr
- CsF
- MgCl2
The electronic configuration of Ca2+:
- 2, 8, 8, 2
- 2, 8, 8
- 2, 8, 8, 4
- 2, 8, 2