Which of the following species has tetrahedral geometry(shape)?
1.
2.
3.
4.
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Which molecule /ion out of the following does not contain unpaired electrons?
1.
2.
3.
4.
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Which of the following order of energies of molecular orbitals of is correct?
1.
2.
3.
4.
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Match the species in Column I with the 5 types of hybrid orbitals given in Column II:
Column I | Column II | ||
1 | \(SF_4\) | (a) | \(sp^3d^2\) |
2 | \(IF_5\) | (b) | \(d^2sp^3\) |
3 | \(NO^+_2\) | (c) | \(sp^3d\) |
4 | \(NH^+_4\) | (d) | \(sp^3\) |
(e) | \(sp\) |
1. (1) → (a), (2) → (b), (3) → (e), (4) → (d)
2. (1) → (c), (2) → (a), (3) → (e), (4) → (d)
3. (1) → (d), (2) → (a), (3) → (e), (4) → (c)
4. (1) → (e), (2) → (b), (3) → (c), (4) → (d)
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Match the species in Column I with the shape in Column II.
Column I (Species) | Column II (Shapes) | ||
(1) | H3O+ | (a) | Linear |
(2) | HC≡CH | (b) | V-shape/bent |
(3) | CIO2- | (c) | Tetrahedral |
(4) | NH4+ | (d) | Trigonal bipyramidal |
(e) | Pyramidal |
1. (1) → (d), (2) → (a), (3) → (b), (4) → (c)
2. (1) → (b), (2) → (a), (3) → (e), (4) → (c)
3. (1) → (e), (2) → (a), (3) → (b), (4) → (c)
4. (1) → (c), (2) → (a), (3) → (b), (4) → (d)
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Which of the following species absorb maximum energy in its HOMO-LUMO electronic tranistion ?
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Which of the following facts given is not correct/
(I) Bond length order :
(II) have same bond order of
(III) Bond order can assume any value including zero upto four
(IV) and have same bond order for X - O bond (where X is central atom)
1. I, II & III
2. I & IV
3. II & IV
4. I & II
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and are converted to monocations and respectively, which is wrong statements:
1. In , the bond weakens
2. In , the bond order increases
3. In , the paramagnetism decreases
4. becomes diamagnetic
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In which of the following transformations, the bond order has increased and the magnetic behavior has changed?
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and both are covalent compounds but is polar whereas is non-polar. This is because :
1. Nitrogen atom is smaller than boron atom
2. N-F bond is more polar than B-F bond
3. NF is pyramidal whereas BF is planar triangular
4. BF is electron deficient whereas NF is not