MEDIUM
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What is a primary valency ?

Important Questions on Chemical Bonding and Molecular Structure

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The species in which the N atom is a state of sp hybridization is:
EASY
The order of electronegativity of carbon in sp, sp2 and sp3 hybridized states follows
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The number and type of bonds in C22- ion in CaC2 are:
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The number of sigma σ and pi π bonds in pent- 2 -en- 4 -yne is:
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The number of σ and π- bonds in 2- formylbenzoic acid are respectively
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Which of the following pairs of compounds is isoelectronic and isostructural?
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Among the compounds shown below which one revealed a linear structure?
EASY
The compounds containing sp hybridized carbon atom are

(i) Question Image (ii) Question Image

(iii) H3C-CN (iv) H2C=C=CHCH3
EASY
Among the following atomic orbital overlaps, non-bonding overlap is:
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The number of sp2 hybrid orbitals in a molecule of benzene is:
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The hybridisation of atomic orbitals of nitrogen in NO2+, NO3- and NH4+ , respectively are:
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The potential energy curve for the H2 molecule as a function of internuclear distance is:
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Which one the following species has plane triangular shape?
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How many (i) sp2 hybridised carbon atoms and (ii) π bonds are present in the following compound?

Question Image

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The potential energy (y) curve for H2 formation as a function of internuclear distance (x) of the H atoms is shown below.

Question Image

The bond energy of H2 is :

EASY
Which of the following conversions involves change in both shape and hybridisation?
MEDIUM
Which of the following species contains equal number of σ - and π - bonds?