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In which of the following pairs, the num...

In which of the following pairs, the number of electrons in the outermost shell are different?

A

As, Sb

B

Ge, Sn

C

In, Pt

D

Se, Te

Text Solution

AI Generated Solution

The correct Answer is:
To determine which pair of elements has a different number of electrons in their outermost shell, we will analyze each pair one by one. ### Step-by-Step Solution: 1. **Identify the pairs of elements**: The pairs given are: - Arsenic (As) and Antimony (Sb) - Germanium (Ge) and Tin (Sn) - Indium (In) and Platinum (Pt) - Selenium (Se) and Tellurium (Te) 2. **Determine the group of each element**: - **Arsenic (As)** and **Antimony (Sb)** both belong to Group 15 (Nitrogen family). - **Germanium (Ge)** and **Tin (Sn)** both belong to Group 14 (Carbon family). - **Indium (In)** belongs to Group 13, while **Platinum (Pt)** belongs to Group 10. - **Selenium (Se)** and **Tellurium (Te)** both belong to Group 16 (Oxygen family). 3. **Find the electron configuration for each element**: - **Arsenic (As)**: [Ar] 4s² 4p³ → 5 electrons in the outermost shell. - **Antimony (Sb)**: [Kr] 5s² 5p³ → 5 electrons in the outermost shell. - **Germanium (Ge)**: [Ar] 4s² 4p² → 4 electrons in the outermost shell. - **Tin (Sn)**: [Kr] 5s² 5p² → 4 electrons in the outermost shell. - **Indium (In)**: [Kr] 5s² 5p¹ → 3 electrons in the outermost shell. - **Platinum (Pt)**: [Xe] 6s¹ 5d⁹ → 10 electrons in the outermost shell. - **Selenium (Se)**: [Ar] 4s² 4p⁴ → 6 electrons in the outermost shell. - **Tellurium (Te)**: [Kr] 5s² 5p⁴ → 6 electrons in the outermost shell. 4. **Count the outermost electrons**: - **As and Sb**: Both have 5 outermost electrons (same). - **Ge and Sn**: Both have 4 outermost electrons (same). - **In and Pt**: In has 3 outermost electrons, Pt has 10 outermost electrons (different). - **Se and Te**: Both have 6 outermost electrons (same). 5. **Conclusion**: The only pair with a different number of outermost shell electrons is **Indium (In)** and **Platinum (Pt)**. ### Final Answer: The pair with different outermost shell electrons is **Indium (In) and Platinum (Pt)**.
To determine which pair of elements has a different number of electrons in their outermost shell, we will analyze each pair one by one. ### Step-by-Step Solution: 1. **Identify the pairs of elements**: The pairs given are: - Arsenic (As) and Antimony (Sb) - Germanium (Ge) and Tin (Sn) - Indium (In) and Platinum (Pt) ...
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