pls pls pls answer all these questions if possible can give hints on answers
Answers
Q. 80 :-
Higher Bond order = Higher Bond length
So answer is option (d)
Bond length NO⁺ > Bond length NO
Q. 81 :-
Isoelectric species → Same no. of electrons
Answer :- Option (d)
K⁺ Electrons = 18
Ca⁺² Electrons = 18
Sc⁺³ Electrons = 18
Cl⁻ Electrons = 18
Q. 82 :-
Answer :- Option (d)
O⁻ ion will lead to resist the addition of another electron
Reason :- Addition of an electron to negatively charged ion will cause it to experience more repulsion hence more energy is required.
Q. 83.
Please consider attachment for explanation.
Answer :- Option (c)
Q. 84.
To form a tetrahedral shape there should be 4 electron pair with 0 lone pair.
So answer is option (c)
BF₄⁻
Q. 85
sp³d :- 6 right angles
sp³d² :- 12 right angles
dsp² :- 4 right angles
dsp³ :- 6 right angles
So answer :- option ( A)
Q. 86
Bond Angles :-
H₂S = 92°
NH₃ = 107°
BF₃ = 120°
SiH₄ = 109.5°
So answer is option (c)
Q. 87
As Nitrogen have less ionization energy than Oxygen ,So the answer is option (b)
Q. 88
No. of lone pairs :-
ClO₃⁻ :- 1
XeF₄ :- 2
SF₄ :- 2
I₃⁻ :- 3
So answer is option (d)
Q. 89
Diamagnetic :- No unpaired electron
→ Answer is option (b) H₂
Q. 90
Lattice energy is depended upon the size/radius and charge of the atom.
Answer :- Option (d)
Q. 91
Isoelectric species :- Same number of electrons :-
Answer is option (a)
As
PO₄³⁻ , No. of electrons = 50
SO₄²⁻ , No. of electrons = 50
ClO₄⁻ , No. of electrons = 50
Q. 92
There is decrease in bond angle From from NH₃ (107°) to SbH₃ (101°) because of decreasing Electronegativity.
Increase in Electronegativity → Higher repulsion
This cause higher Bond Angle.
Answer :- Option (d)
Q. 93
Answer is option (a)
Because SF₄ will show a see-saw structure with angles ( 89° , 177° )
So it will not have equal bonds.
Q. 94
Increasing order of first ionization enthalpies.
As first ionization enthalpies increases
Down to up and Left to right in a Periodic table.
→ P < S < B < F option (b)
Q. 95
Isoelectric species → Same no. of electrons
Answer :- Option (a)
K⁺ Electrons = 18
Ca⁺² Electrons = 18
Sc⁺³ Electrons = 18
Cl⁻ Electrons = 18
Q. 96.
O₂²⁻ Don't contains any unpaired electron
Hence answer is option (a)
Answer:
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