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Electronic configuration of four element...

Electronic configuration of four elements A, B ,C and D are given below
A) `1s^(2), 2s^(2), 2p^(6)`
B) `1s^(2), 2s^(2), 2p^(4)`
C) `1s^(2), 2s^(2), 2p^(6), 3s^(1)`
D) `1s^(2), 2s^(2), 2p^(5)`
Which of the following is the correct order of increasing tendency to gain electron?

A

`AltCltBltD`

B

`AltBltCltD`

C

`DltBltCltA`

D

`DltAltBltC`

Text Solution

AI Generated Solution

The correct Answer is:
To determine the order of increasing tendency to gain electrons for the elements A, B, C, and D based on their electronic configurations, we will analyze each configuration step by step. ### Step-by-Step Solution: 1. **Identify the Electronic Configurations**: - A: `1s² 2s² 2p⁶` - B: `1s² 2s² 2p⁴` - C: `1s² 2s² 2p⁶ 3s¹` - D: `1s² 2s² 2p⁵` 2. **Determine the Stability of Each Configuration**: - **Element A**: The configuration `1s² 2s² 2p⁶` indicates a complete octet (8 electrons in the outer shell). This means it is stable and has no tendency to gain or lose electrons. - **Element B**: The configuration `1s² 2s² 2p⁴` has 6 electrons in the outer shell. If it gains 2 electrons, it will complete its octet (2s² 2p⁶). Thus, it has a moderate tendency to gain electrons. - **Element C**: The configuration `1s² 2s² 2p⁶ 3s¹` has 7 electrons in the outer shell. If it gains 1 electron, it will have 8 electrons in the outer shell (3s²), which is stable. However, it can also lose its single 3s electron to achieve stability, indicating a lower tendency to gain electrons compared to B. - **Element D**: The configuration `1s² 2s² 2p⁵` has 7 electrons in the outer shell. If it gains 1 electron, it will complete its octet (2s² 2p⁶), achieving a stable noble gas configuration. Therefore, it has the highest tendency to gain electrons. 3. **Rank the Elements Based on Their Tendency to Gain Electrons**: - A: Least tendency (stable, complete octet) - C: Moderate tendency (can lose or gain electrons) - B: Moderate tendency (can gain electrons to complete octet) - D: Highest tendency (gains 1 electron to complete octet) 4. **Final Order**: The correct order of increasing tendency to gain electrons is: **A < C < B < D** ### Final Answer: The correct order of increasing tendency to gain electrons is: **A < C < B < D**
To determine the order of increasing tendency to gain electrons for the elements A, B, C, and D based on their electronic configurations, we will analyze each configuration step by step. ### Step-by-Step Solution: 1. **Identify the Electronic Configurations**: - A: `1s² 2s² 2p⁶` - B: `1s² 2s² 2p⁴` - C: `1s² 2s² 2p⁶ 3s¹` ...
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