Home
Class 11
CHEMISTRY
In the long or modern form of the period...

In the long or modern form of the periodic table, the element in the periodic table have been divided into four blocks, `s-p-d`-and `f`-. Each period begins with the filling of new energy shell. Two series of
`f`-block elements are placed at the bottom of the periodic table.
Which of the following ions is most stable?

A

`Li^(ɵ)`

B

`Be^(ɵ)`

C

`B^(ɵ)`

D

`C^(ɵ)`

Text Solution

AI Generated Solution

The correct Answer is:
To determine which of the given ions is the most stable, we will analyze the stability of each ion based on their electronic configurations and the principles of stability related to filled and half-filled orbitals. ### Step 1: Analyze the given ions 1. **Li⁻ (Lithium ion)**: - Lithium (Li) has the electronic configuration: 1s² 2s¹. - When it gains one electron to form Li⁻, its configuration becomes: 1s² 2s². - This configuration is stable because the 2s subshell is fully filled. 2. **Be⁻ (Beryllium ion)**: - Beryllium (Be) has the electronic configuration: 1s² 2s². - When it gains one electron to form Be⁻, its configuration becomes: 1s² 2s² 2p¹. - This configuration is unstable because the 2p subshell is not filled (it can hold up to 6 electrons). 3. **B⁻ (Boron ion)**: - Boron (B) has the electronic configuration: 1s² 2s² 2p¹. - When it gains one electron to form B⁻, its configuration becomes: 1s² 2s² 2p². - This configuration is also unstable because the 2p subshell is not filled. 4. **C⁻ (Carbon ion)**: - Carbon (C) has the electronic configuration: 1s² 2s² 2p². - When it gains one electron to form C⁻, its configuration becomes: 1s² 2s² 2p³. - This configuration is stable due to the half-filled 2p subshell, which is generally more stable than an unfilled subshell. ### Step 2: Compare the stability of the ions - **Li⁻**: Fully filled 2s subshell (stable). - **Be⁻**: Unstable due to the partially filled 2p subshell. - **B⁻**: Unstable due to the partially filled 2p subshell. - **C⁻**: Half-filled 2p subshell (stable). ### Step 3: Conclusion While both Li⁻ and C⁻ are stable, the fully filled 2s subshell in Li⁻ makes it more stable than the half-filled 2p subshell in C⁻. Therefore, the most stable ion among the given options is: **Answer: Li⁻** ---
To determine which of the given ions is the most stable, we will analyze the stability of each ion based on their electronic configurations and the principles of stability related to filled and half-filled orbitals. ### Step 1: Analyze the given ions 1. **Li⁻ (Lithium ion)**: - Lithium (Li) has the electronic configuration: 1s² 2s¹. - When it gains one electron to form Li⁻, its configuration becomes: 1s² 2s². - This configuration is stable because the 2s subshell is fully filled. ...
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • PERIODIC CLASSIFICATION OF ELEMENTS AND GENERAL INORGANIC CHEMISTRY

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercises (Multiple Correct) General Electronic Configuration And Periodicity|5 Videos

  • PERIODIC CLASSIFICATION OF ELEMENTS AND GENERAL INORGANIC CHEMISTRY

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercises (Multiple Correct) Atomic And Ionic Radii|4 Videos

  • PERIODIC CLASSIFICATION OF ELEMENTS AND GENERAL INORGANIC CHEMISTRY

    CENGAGE CHEMISTRY ENGLISH|Exercise Ex 1.32 (Assertion-Reasoning)|2 Videos

  • P-BLOCK GROUP 14 - CARBON FAMILY

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercises Archives (Subjective)|9 Videos

  • PURIFICATION OF ORGANIC COMPOUNDS AND QUALITATIVE AND QUANTITATIVE ANALYSIS

    CENGAGE CHEMISTRY ENGLISH|Exercise Assertion Reasoning Type|5 Videos

Similar Questions

Explore conceptually related problems

In the long or modern form of the periodic table, the element in the periodic table have been divided into four blocks, s-p-d -and f -. Each period begins with the filling of new energy shell. Two series of f -block elements are placed at the bottom of the periodic table. The element with Z=39 belongs to

In the long or modern form of the periodic table, the element in the periodic table have been divided into four blocks, s-p-d -and f -. Each period begins with the filling of new energy shell. Two series of f -block elements are placed at the bottom of the periodic table. Which of the element whose atomic numbers are given below cannot be accommodated in the present set-up of the modern periodic table?

In the long or modern form of the periodic table, the element in the periodic table have been divided into four blocks, s-p-d -and f -. Each period begins with the filling of new energy shell. Two series of f -block elements are placed at the bottom of the periodic table. The last element of the p -block in the present periodic table is represented by the configuration, where [X] represents inert gas is

In the long or modern form of the periodic table, the element in the periodic table have been divided into four blocks, s-p-d -and f -. Each period begins with the filling of new energy shell. Two series of f -block elements are placed at the bottom of the periodic table. The element with Z=113 has been discovered. Its block, group number, period and ourershell electronic configuration are

In the long or modern form of the periodic table, the element in the periodic table have been divided into four blocks, s-p-d -and f -. Each period begins with the filling of new energy shell. Two series of f -block elements are placed at the bottom of the periodic table. If the elements were discovered in future in which the electrons would be present in g -orbitals. Then g -orbital starts, and ends up with what atomic number?

In the long or modern form of the periodic table, the element in the periodic table have been divided into four blocks, s-p-d -and f -. Each period begins with the filling of new energy shell. Two series of f -block elements are placed at the bottom of the periodic table. What is the maximum number of electrons that can be accommodated with n=5 ( n= principal quantum number)?

Group of elements which are kept at the bottom of periodic table.

How many elements are present in the d-block of the periodic table?

The number of elements expected in the g-block of the periodic table is:

The f -block elements of the periodic table contains those element in which

Home
Profile