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Q. No.The correct electronic configuration of an element that is just above the 4th period and belongs to the 16th group is:
1. 4s23d104p4
2. 2s22p4
3. 3s23p4
4. 5s25d104p4
Subtopic: Electronic Configuration |
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Subtopic: Nature of Compound |
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Subtopic: Modern Periodic Table & Periodicity |
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Which of the following is a metalloid?
1. ln (Indium)
2. Te (Tellurium)
3. Pb (Lead)
4. Bi (Bismuth)
1. ln (Indium)
2. Te (Tellurium)
3. Pb (Lead)
4. Bi (Bismuth)
Subtopic: Modern Periodic Table & Periodicity |
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The number of oxides among the following that exhibit an amphoteric nature is:
(a) \(Na_2O\)
(b) \(As_2O_3\)
(c) \(NO\)
(d) \(N_2O\)
(e) \(Cl_2O_7\)
1. 0
2. 1
3. 2
4. 3
(a) \(Na_2O\)
(b) \(As_2O_3\)
(c) \(NO\)
(d) \(N_2O\)
(e) \(Cl_2O_7\)
1. 0
2. 1
3. 2
4. 3
Subtopic: Nature of Compound |
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Mark the correct increasing order of the metallic character of the given below elements:
Si, K, Mg, and Be
Si, K, Mg, and Be
| 1. | Si < Mg < Be < K | 2. | Be < Mg < Si < K |
| 3. | Si < Be < Mg < K | 4. | K < Mg < Si < Be |
Subtopic: Modern Periodic Table & Periodicity |
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Match the atomic numbers in List I with the corresponding groups in List II:
| List-I (Atomic number) | List-II (Group) | ||
| i. | 52 | P. | s |
| ii. | 37 | Q. | p |
| iii. | 65 | R. | f |
| iv. | 74 | S. | d |
1. (i)-Q, (ii)-P, (iii)-R, (iv)-S
2. (i)-Q, (ii)-P, (iii)-S, (iv)-R
3. (i)-S, (ii)-R, (iii)-P, (iv)-Q
4. (i)-R, (ii)-P, (iii)-Q, (iv)-S
Subtopic: Electronic Configuration |
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Select the correct order of magnitudes of the first electron gain enthalpy from the options provided:
1. Cl < F
2. O < S
3. Te < O
4. S < Se
1. Cl < F
2. O < S
3. Te < O
4. S < Se
Subtopic: Electron Affinity (EA) |
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Choose the option containing all isoelectronic species:
1. \(N^{3-}, O^{2-}, F, Na \)
2. \(\mathrm{S}^{-2}, \mathrm{Cl}^{-}, \mathrm{K}^{+}, \mathrm{Ca}^{2+} \)
3. \(\mathrm{NH}_3, \mathrm{CH}_4, \mathrm{PF}_5, \mathrm{Na}^{+} \)
4. \(\mathrm{Ne}, \mathrm{Na}^{+}, \mathrm{F}, \mathrm{N}^{3-} \)
1. \(N^{3-}, O^{2-}, F, Na \)
2. \(\mathrm{S}^{-2}, \mathrm{Cl}^{-}, \mathrm{K}^{+}, \mathrm{Ca}^{2+} \)
3. \(\mathrm{NH}_3, \mathrm{CH}_4, \mathrm{PF}_5, \mathrm{Na}^{+} \)
4. \(\mathrm{Ne}, \mathrm{Na}^{+}, \mathrm{F}, \mathrm{N}^{3-} \)
Subtopic: Modern Periodic Table & Periodicity |
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According to the periodic law of elements, the variation in properties of elements is related to their:
1. Atomic masses
2. Nuclear mass
3. Atomic numbers
4. Nuclear neutron-proton number ratio
Subtopic: Modern Periodic Table & Periodicity |
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