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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 |
Subtopic: Â Atomic Size |
 53%
Level 3: 35%-60%
Hints
Links
| Assertion (A): | Na+ and Al3+ are isoelectronic but the magnitude of ionic radius of Al3+ is less than that of Na+. |
| Reason (R): | The magnitude of effective nuclear charge of the outer shell electrons in Al3+ is greater than that in Na+. |
| 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 and (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Â Atomic Size |
 87%
Level 1: 80%+
Hints
Consider the given two statements:
| Assertion(A): | The mobility of sodium ion is lower than that of potassium ion. |
| Reason(R): | Ionic mobilities depend on the effective radius of the ion. |
| 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. | Both (A) and (R) are false. |
Subtopic: Â Atomic Size |
 75%
Level 2: 60%+
Hints
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 |
Subtopic: Â Atomic Size |
 88%
Level 1: 80%+
Hints
Match the elements given in List-I with the atomic radius given in List-II the correct atomic radius with the corresponding element.
|
List-I
Element
|
List-II
Atomic radius (pm)
|
||
| A. | Be | i. | 74 |
| B. | C | ii. | 85 |
| C. | O | iii. | 112 |
| D. | B | iv. | 77 |
| E. | N | v. | 66 |
| Options: | A | B | C | D | E |
| 1. | i | ii | iii | iv | v |
| 2. | iii | iv | v | ii | i |
| 3. | iv | ii | iii | i | v |
| 4. | v | ii | i | iii | iv |
Subtopic: Â Atomic Size |
 82%
Level 1: 80%+
Hints
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Q. No.
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