- 1(current)
Q. No.| Assertion: | Fluorine forms only one oxoacid, HOF. |
| Reason: | Fluorine has a small size and high electronegativity. |
1. Both assertion and reason are true and the reason is the correct explanation of assertion.
2. Both assertion and reason are true and the reason is not the correct explanation of assertion.
3. Assertion is true but the reason is false.
4. Assertion is false but the reason is true.
The basic difference between the electron gain enthalpy (Ea) and electronegativity (EN) is -
| 1. | Ea is the tendency to lose electrons, while EN is the tendency to repel the shared pairs of electrons. |
| 2. | Ea is the tendency to gain neutrons, while EN is the tendency to attract the shared pairs of electrons. |
| 3. | Ea is the tendency to donate electrons, while EN is the tendency to attract the shared pairs of molecules. |
| 4. | Ea is the tendency to gain electrons, while EN is the tendency to attract the shared pairs of electrons. |
The electronegativity of the following elements increases in the order of:
| 1. | S < P < N < O | 2. | P < S < N < O |
| 3. | N < O < P < S | 4. | N < P < S < O |
Allred Rochow's scale is related to:
1. Electronegativity, radius, and Z*
2. Resonance energy of the molecule, ionisation potential and electron affinity.
3. Bond Polarity, diagonal relationship and periodicity.
4. None of the above.
The incorrect order of electronegativity is :
| 1. | Cl > S > P > Si | 2. | Si > Al > Mg > Na |
| 3. | F > Cl > Br > I | 4. | None of the above. |
The statement that "the electronegativity of N on the Pauling scale is 3.0 in all the nitrogen compounds" is incorrect because -
1. Electronegativity of an element is a variable property.
2. Pauling scale is not used to measure electronegativity.
3. The electronegativity of N on the Pauling scale is 12.0
4. None of the above.
Percentage ionic character, if electronegativity value of X=2.1 & Y=3.0, is :-
| 1. | 20 | 2. | 30 |
| 3. | 17 | 4. | 23 |
- 1(current)
Q. No.
© 2024 GoodEd Technologies Pvt. Ltd.