Q. No.Abnormally high ionization enthalpy of B as depicted in the graph below can be due to :
1. Completely filled 2p subshell.
2. Completely filled 2s subshell.
3. Completely filled 3d subshell.
4. Completely filled 4f subshell.
The correct graph depicting ionization energies for 2nd period elements is:
| 1. |  |
| 2. |  |
| 3. |  |
| 4. | None of the above |
| 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. |
The graph between ionization energy and atomic number for the first group elements is shown below:
The element represented by Y in the graph above is:
1. Cs
2. Rb
3. Ca
4. K
In the following graph of variation of ionization energy with atomic number, X, Y, and Z represent elements.
The group number of X, Y, and Z elements is:
| 1. | 1st group | 2. | 15th group |
| 3. | 17th group | 4. | 18th group |
Consider the following curves:
X represents group with highest atomic radius. The element that belongs to Y group can be :
| 1. | Na | 2. | Mg |
| 3. | Br | 4. | Si |
The correct order of ionization energy of W, X, Y and Z is-
| 1. | W > X > Y > Z | 2. | W < X < Y > Z |
| 3. | W < X > Y< Z | 4. | W > X > Y< Z |
Match the following isoelectronic species in Column-I and Column-II:
| Column-I | Column II | ||
| i. | a. | ||
| ii. | Ar | b. | |
| iii. | c. | ||
| iv. | d. |
| i | ii | iii | iv | |
| 1. | b | c | a | d |
| 2. | c | b | a | d |
| 3. | c | d | b | a |
| 4. | b | c | d | a |
Correct statement(s) among the following are:
| (a) | Helium has the highest first ionisation enthalpy in the periodic table. |
| (b) | Chlorine has less negative electron gain enthalpy than fluorine. |
| (c) | Mercury and bromine are liquids at room temperature. |
| (d) | In any period, the atomic radius of alkali metal is the highest. |
Choose the correct option:
1. (a), (c), (d)
2. (a), (b), (c)
3. (a), (c)
4. (a), (d)
Match Column I with Column II.
| Column-I | Column-II | ||
| (a) | Copper | (i) | Non-metal |
| (b) | Fluorine | (ii) | Transition metal |
| (c) | Silicon | (iii) | Lanthanoid |
| (d) | Cerium | (iv) | Metalloid |
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iv) | (i) | (iii) |
| 2. | (ii) | (i) | (iv) | (iii) |
| 3. | (iv) | (iii) | (i) | (ii) |
| 4. | (i) | (ii) | (iii) | (iv) |
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