Test: Chemical Bonding- 2
30 Questions MCQ Test Inorganic Chemistry | Test: Chemical Bonding- 2
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Among the following pairs in which the two species are not isostructural is:
Which of the following set of ions/ molecules is isoelectric and structural?
Isoelectronic species are those have same number of electrons.
In allene (C3H4), the type(s) of hybridisation of the carbon atoms is (are)
The atom that form discrete polyatomic molecule in its elemental state are:
Sulfur forms discrete polyatomic molecule as in S8
Carbon forms discrete polyatomic molecules as in diamond, etc.
Which of the following species has two non bonded electron pairs on the central atom:
In TeCl4 out of 6 electrons:bonded electrons are 4,non-bonded electron pair is 1.
In ClF3 out of 7 electrons:bonded electrons are 3,non-bonded electron pairs are 2.
In PCl3 out of 5 electrons:bonded electrons are 3,non-bonded electron pair is 1.
In ICl2− out of (7+1=8) electrons:bonded electrons are 2,non-bonded electron pairs are 3.
The shape and expected hybridization of BrO3- and HOCl are:
The hybridization of atomic orbital of nitrogen in NO2+, NO3- and NH4+ are:
Among the molecular ions, the dπ - pπ bond is possible in:
Now the shape becomes:Covalent-molecules are usually held in a crystal structure by
The atoms in molecular covalent molecules are held together by strong covalent bonds. Although these bonds are strong, there are only weak forces of attraction between molecules. These weak attractive forces are called van der Waal’s forces and can be broken with little energy.
Pi bond electrons don’t contribute when we calculate the hybridization. So due to one sigma bond and one lone pair hybridization will be “sp”.
Hence D is correct.
In octahedral structure the pair of ‘d’ orbitals invo lved is:
Hybridization state of boron and oxygen in boric acid is:
The state of hybridization of boron and oxygen atom in boric acid (H3BO3) is sp2,sp3 respectively.
Boric acid 
; has a network structure in which boron is trigonal having sp2 and each oxygen atom is tetrahedral having sp3-hybridization with two lone pair of electrons on oxygen.
PCl3 has sp3-hybridised phosphorus, with one lone pair. Therefore, molecule has pyramidal shape like ammonia.
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