Chemistry
Give one word or phrase for the following :
(a) Formation of ions from molecules.
(b) A bond formed by a shared pair of electrons with both electrons coming from the same atom.
(c) A bond formed by a shared pair of electrons, each bonding atom contributing one electron to the pair.
Chemical Bonding
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Answer
(a) Ionisation
(b) Coordinate bond
(c) Covalent Bond
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Related Questions
Assertion (A): Electrovalent compounds conduct electricity even in solid state.
Reason (R): Electrovalent compounds are composed of ions.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Fill in the blanks by selecting the correct word from the brackets :
(a) When the nuclei of two different reacting atoms are of …………… mass, then a bond so formed is called …………… covalent bond (equal, unequal, polar, non-polar).
(b) In case of non-polar covalent bond, the covalent bond is formed in the …………… of atoms and shared electrons are distributed (corner, middle, equally, unequally).
(c) Ionic or electrovalent compounds do not conduct electricity in their …………… state (fused/solid).
(d) The ions in …………… compounds are held very strongly due to strong …………… forces (electrovalent, covalent, electromagnetic, electrostatic).
(e) In covalent compounds, the bond is formed due to …………… [sharing/transfer] of electrons.
(f) Electrovalent compounds have a …………… [low/high] boiling point.
In the formation of magnesium chloride (by direct combination between magnesium and chlorine), name the substance that is oxidized and the substance that is reduced.
Give an example in each of the following :
(a) Co-ordinate bond compound,
(b) Solid covalent compound,
(c) Gaseous polar covalent compound,
(d) Gaseous non polar covalent compound,
(e) Liquid non polar covalent compound,
(f) Compound with electrovalent and covalent bond,
(g) Compound with all three types of bonds.