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Q. No.The IUPAC name of an element with atomic number 119 is:
1.
Ununoctium
2.
Ununennium
3.
Unnilennium
4.
Unununnium
Subtopic: Modern Periodic Table & Periodicity |
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Match list-I with list-II:
| List-I Elements |
List-II Atomic radii (pm) |
||
| (a) | O | (i) | 88 |
| (b) | C | (ii) | 74 |
| (c) | B | (iii) | 66 |
| (d) | N | (iv) | 77 |
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (i) | (iv) | (iii) |
| 2. | (iv) | (iii) | (ii) | (i) |
| 3. | (i) | (iv) | (iii) | (ii) |
| 4. | (iii) | (iv) | (i) | (ii) |
Subtopic: Atomic Size |
71%
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The first ionization enthalpies of elements X and Y are 419 kJ mol–1 and 590 kJ mol–1, respectively and the second ionization enthalpies of X and Y are 3069 kJ mol–1 and 1145 kJ mol–1, respectively. The correct statement is:
| 1. | X is an alkali metal and Y is an alkaline earth metal. |
| 2. | X is an alkaline earth metal and Y is an alkali metal. |
| 3. | Both X and Y are alkali metals. |
| 4. | Both X and Y are alkaline earth metals. |
Subtopic: Ionization Energy (IE) |
71%
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The correct order of first ionization enthalpy for the given four element is:
1. C < N < F < O
2. C < N < O < F
3. C < O < N < F
4. C < F < N < O
1. C < N < F < O
2. C < N < O < F
3. C < O < N < F
4. C < F < N < O
Subtopic: Ionization Energy (IE) |
77%
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NEET - 2022
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The element expected to form the largest ion to achieve the nearest
noble gas configuration is:
1. Na
2. O
3. F
4. N
noble gas configuration is:
1. Na
2. O
3. F
4. N
Subtopic: Atomic Size |
53%
From NCERT
NEET - 2023
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Which one of the following represents all isoelectronic species?
1. \(Na^+ , Cl^-, O^- , NO^+\)
2. \(N_2O, N_2O_4 , NO^+, NO\)
3. \(Na^+ , Mg^{2+} , O^- , F^-\)
4. \(Ca^{2+} , Ar, K^+, Cl^-\)
1. \(Na^+ , Cl^-, O^- , NO^+\)
2. \(N_2O, N_2O_4 , NO^+, NO\)
3. \(Na^+ , Mg^{2+} , O^- , F^-\)
4. \(Ca^{2+} , Ar, K^+, Cl^-\)
Subtopic: Ionization Energy (IE) |
76%
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NEET - 2023
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Which of the following pair is correctly matched?
1. Basic oxides - \(In_2O_3 , K_2O , SnO_2\)
2. Neutral oxides - \(CO, NO_2, N_2O\)
3. Acidic oxides - \(Mn_2O_7, SO_2, TeO_3\)
4. Amphoteric oxides -\(BeO , Ga_2O_3 , GeO \)
1. Basic oxides - \(In_2O_3 , K_2O , SnO_2\)
2. Neutral oxides - \(CO, NO_2, N_2O\)
3. Acidic oxides - \(Mn_2O_7, SO_2, TeO_3\)
4. Amphoteric oxides -\(BeO , Ga_2O_3 , GeO \)
Subtopic: Nature of Compound |
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The correct sequence given below contains neutral, acidic, basic, and amphoteric oxide each, respectively is:
| 1. | NO, ZnO, CO2, CaO | 2. | ZnO, NO, CaO, CO2 |
| 3. | NO, CO2, ZnO, CaO | 4. | NO, CO2, CaO, ZnO |
Subtopic: Nature of Compound |
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Factor among the following that doesnot affect the ionization enthalpy of an element is -
1. Effective nuclear charge
2 . Atomic radius
3. Half filled and completely filled sub shell
4. Atomic number
1. Effective nuclear charge
2 . Atomic radius
3. Half filled and completely filled sub shell
4. Atomic number
Subtopic: Ionization Energy (IE) |
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Oxygen has lower ionisation enthalpy than nitrogen due to -
1. Half filled p subshell of oxygen atom.
2. Half filled p subshell of nitrogen atom.
3. Complete filled p subshell of oxygen atom.
4. Complete filled p subshell of nitrogen atom.
1. Half filled p subshell of oxygen atom.
2. Half filled p subshell of nitrogen atom.
3. Complete filled p subshell of oxygen atom.
4. Complete filled p subshell of nitrogen atom.
Subtopic: Ionization Energy (IE) |
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