dπ - pπ bond is present in:

1. CO32-

2. PO4-3

3. NO3-

4. NO2-

Subtopic:  Covalent Bond |
 89%
Level 1: 80%+
AIPMT - 2000
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\(P_\pi - d_\pi\) bonding is present in:

1. \(NO_{3}^{-}\) 2. \(SO_{3}^{- 2}\)
3. \(BO^{-3}_3\) 4. \(CO^{-2}_3\)
Subtopic:  Covalent Bond |
 87%
Level 1: 80%+
AIPMT - 2002
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Arrange the following in increasing order of their covalent character.
A. \(\mathrm{CaF}_2 \)
B. \(\mathrm{CaCl}_2 \)
C. \(\mathrm{CaBr}_2 \)
D. \(\mathrm{CaI}_2\)
Choose the correct answer from the option given below.
1. \(B<A<C<D\) 
2. \(A<B<C<D\)
3. \(A<B<D<C\)
4. \(A<C<B<D\)
Subtopic:  Covalent Bond |
 86%
Level 1: 80%+
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Consider the given figure, which shows the potential energy levels(E) of the \(\mathrm{H}_2^{+}\)​ ion as a function of internuclear distance(d).
 

It can be reasonably assumed that the ground state of the \(\mathrm{H}_2^{+}\) molecular ion corresponds to the lowest energy level, which implies that:
1. Curve 1 represents the most state of the system for \(\mathrm{H}_2^{+}\) ion.
2. Curve 2 represents the most stable state of the system for \(\mathrm{H}_2^{+}\) ion.
3. Data is insufficient. 
4. None of the above.
Subtopic:  Covalent Bond |
 84%
Level 1: 80%+
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