Q. No.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
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
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, B is wrong. |
| 2. | Statement A is wrong, B is correct |
| 3. | Both A and B are wrong. |
| 4. | Both A and B are correct |
Consider the following curve:
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 the element in column I with that in 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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