- 1(current)
Q. No.The IUPAC name and symbol for the element with atomic number 120 are respectively:
1. Unnilbium; Ubn
2. Unbinilium; Ubn
3. Ununbium; Uub
4. Unbinilium; Uub
Subtopic: Â Modern Periodic Table & Periodicity |
 87%
From NCERT
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| Statement A: | The elements Z = 117 belongs to chalcogen family and the electronic configuration would be [Rn] 5f146d107s27p4 |
| Statement B: | The element with Z = 120 belongs to Group 2 (alkaline earth metals), and the electronic configuration would be [Uuo]8s2 |
The correct option is:
| 1. | Statement A is correct, Statement B is wrong. |
| 2. | Statement A is wrong, Statement B is correct. |
| 3. | Both Statement A and Statement B are wrong. |
| 4. | Both Statement A and Statement B are correct. |
Subtopic: Â Modern Periodic Table & Periodicity |
 65%
From NCERT
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| Assertion (A): | In the 5th period of the Periodic Table 18 elements are present. |
| Reason (R): | When n = 5, l = 0, 1, 2, 3. The total number of orbitals available are 9. The maximum number of electrons that can be accommodated is 18. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Â Modern Periodic Table & Periodicity |
 55%
From NCERT
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Arrange the following elements in increasing order of metallic character:
Si, Be, Mg, Na, P
1. P < Si < Be < Mg = Na.
2. P < Si > Be < Mg < Na
3. P > Si > Be >Mg > Na
4. P < Si < Be < Mg < Na.
Subtopic: Â Modern Periodic Table & Periodicity |
 70%
From NCERT
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- 1(current)
Q. No.
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