The driving force of an atom to form chemical bonds involves:
1. To increase the size.

2. To decrease size.

3. To attain stability.

4. None of the above.

Subtopic:  Covalent Bond |
 91%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The Lewis dot symbols for atoms of the elements Mg, Na, O, and N, respectively, would be:

1.
2.
3.
4.
Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
 86%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Lewis symbols for the atoms and ions: S and S2–; Al and Al3+; H and H respectively, would be:

1.
2.  
3.
4.
Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
 81%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Which of the following factors are favourable for the formation of an ionic bond?

1. Low ionization enthalpy, High negative electron gain enthalpy, High lattice energy.
2. High ionization enthalpy, High electron gain enthalpy, High lattice energy.
3. Low ionization enthalpy, Low electron gain enthalpy, Low lattice energy.
4. High ionization enthalpy, Low electron gain enthalpy, High lattice energy.
Subtopic:  Ionic Bond |
 74%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The correct relationship between bond strength and bond order is :

1. Bond strength is directly proportional to the bond order.
2. Bond strength is inversely proportional to the bond order.
3. There is no relationship between these two terms.
4. None of the above.

Subtopic:  Types of Chemical Bond |
 81%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The bond length can be defined as -

1. The equilibrium distance between the nuclei of two bonded atoms in a molecule.
2. The farthest distance between the nuclei of two bonded atoms in a molecule.
3. The shortest distance between the nuclei of two bonded atoms in a molecule.
4. None of the above.

Subtopic:  Types of Chemical Bond |
 60%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

\(\text{H}_3\text{PO}_3\) can be represented by structures 1 and 2 shown below.


However, these two structures cannot be considered as canonical forms of a resonance hybrid because:

1. The positions of the atoms are different in each structure.

2. The positions of the atoms remain unchanged.

3. \(\text{H}_3\text{PO}_3\) does not show resonance.

4. Two hydrogen atoms are missing.

Subtopic:  Resonance & Nature of Compounds |
 62%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The shape of H2O molecule is bent while that of CO2 is linear. The correct explanation for this fact is that dipole moment of:

1. carbon dioxide is 3.84 D and that of water is zero.
2. water is zero and that of carbon dioxide is 1.84 D.
3. carbon dioxide is zero and that of water is 1.84 D.
4. carbon dioxide is 3.84 D and that of water is 1.84 D.

Subtopic:  Polarity |
 84%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The application of dipole moment is/are :

1. It is used to differentiate polar and non-polar bonds.
2. It is helpful in calculating the percentage ionic character of a molecule.
3. Both '1' and '2'
4. None of the above.

Subtopic:  Polarity |
 87%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

The difference between electronegativity and electron gain enthalpy is:

1. An element has a constant value of the electron gain enthalpy but not of electronegativity.
2. There is no difference between these two terms.
3. An element has a constant value of electronegativity but not of electron gain enthalpy.
4. None of the above.

Subtopic:  Lattice & Hydration Energy |
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch