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Which of the following molecules has no lone pair of electrons on central atom?
SF₄ has no lone pairs on sulfur because it has five bonding pairs and no lone pairs. SO₂ and NH₃ both have lone pairs.
What is the number of moles of sp³ hybrid carbon atoms present in n moles of isopentane?
Isopentane (C₅H₆) has two sp³ hybrid carbon atoms in its structure.
What is the number of electrons around sulfur in Hâ‚‚SOâ‚„ molecule?
In Hâ‚‚SOâ‚„, sulfur is surrounded by two bonding pairs and two lone pairs, totaling six electrons.
Identify the molecule from following that does NOT involve sp³ hybridization.
CH₄ involves sp³ hybridization, C₂H₂ involves sp hybridization, H₂O involves sp³ hybridization, and NH₃ involves sp³ hybridization.
What is the number of unpaired electrons in NO molecule?
NO has one unpaired electron in the π* orbital.
Identify a molecule with incomplete octet from following.
PCl₅ has an incomplete octet because it has five valence electrons around phosphorus. SF₆, LiCl, and H₂SO₄ all have complete octets.
Which among the following compound exhibits highest lattices enthalpy?
CaClâ‚‚ has the highest lattice enthalpy due to its ionic nature and strong electrostatic interactions.
What is bond order of Fâ‚‚ molecule?
Fâ‚‚ has a bond order of 1 because it has a single bond between the two fluorine atoms.
Which of the following molecules does not obey octet rule?
Oâ‚‚ does not obey the octet rule because it has two lone pairs of electrons, which exceeds the maximum of eight valence electrons. Clâ‚„, Clâ‚‚, and BeFâ‚‚ all obey the octet rule.
What is the bond order in Nâ‚‚?
Nâ‚‚ has a bond order of 3 due to the presence of a triple bond between the two nitrogen atoms.
What is formal charge on carbon in the following Lewis structure?
In COâ‚‚, carbon is double-bonded to oxygen and has no lone pairs, so it has a formal charge of +1.
What is the number of unpaired electrons present in Oâ‚‚ molecule?
O₂ has two unpaired electrons in its π* orbitals.
Which among the following pair of compounds, the nitrogen exhibits lowest and highest oxidation states respectively?
NH₃ has nitrogen in its lowest oxidation state (-3) and N₂O₅ has nitrogen in its highest oxidation state (+5).
Which of the following molecules has lowest bond angle?
BF₃ has the lowest bond angle due to its trigonal planar geometry.
Find the formal charge on nitrogen in the following Lewis structure.
In NOâ‚‚, nitrogen has a formal charge of +1 because it is bonded to oxygen with one double bond and one lone pair.
Identify geometry of SiClâ‚„ molecule.
SiClâ‚„ has a tetrahedral geometry due to the presence of four bonding pairs and one lone pair of electrons around silicon.
Identify a molecule with highest covalent nature
PbClâ‚‚ has the highest covalent nature because it has the highest ratio of non-metal atoms to metal atoms.
Which of the following molecules is non polar?
C₆H₆ is non polar because it is symmetrical and has no net dipole moment. C₄H₅Cl, ICl, and HF are polar molecules.
The hybridisation and geometry of boron trifluoride molecule is respectively.
BF₃ has sp³ hybridisation and a trigonal planar geometry due to the presence of three bonding pairs and no lone pairs.
What is bond order of CO molecule?
CO has a bond order of 3 due to the presence of a triple bond between carbon and oxygen.
Which among the following pairs of molecules have same shape and number of lone pairs electron?
SO₂ and O₃ have the same shape and number of lone pairs. NH₃ and SO₂ have different shapes and numbers of lone pairs. H₂O and PCl₃ have different shapes and numbers of lone pairs. SO₂ and SF₄ have different shapes.
What is the geometry of PClâ‚… molecule as per VSEPR ?
PClâ‚… has a trigonal bipyramidal geometry due to the presence of three bonding pairs and one lone pair of electrons around phosphorus.
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