Which of the following elements belongs to the same group as the eleme...
The electronic configuration of B is 1s2 2s2 2p6 3s2 3p1 and the number of electron in last p orbital is 1 so it belongs to the same group as element with configuration (1s2 2s2 2p1).
Which of the following elements belongs to the same group as the eleme...
Understanding Electron Configuration
The given electron configuration is 1s² 2s² 2p¹. This configuration corresponds to the element Gallium (Ga), which is in Group 13 of the periodic table.
Identifying the Group
- Group 13 Elements: The elements in this group have three electrons in their outermost shell (valence shell).
- Valence Electrons: For Group 13, the general configuration is ns² np¹, where n is the principal quantum number.
Analyzing the Options
Let's break down the options provided:
- Option A: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
- This configuration corresponds to Argon (Ar), which is a noble gas in Group 18. Not the same group.
- Option B: 1s² 2s² 2p⁶ 3s² 3p³
- This configuration corresponds to Arsenic (As), which is in Group 15. Not the same group.
- Option C: 1s² 2s² 2p⁶ 3s² 3p¹
- This configuration corresponds to Aluminum (Al), which is in Group 13. Correct choice, same group as Gallium.
- Option D: 1s² 2s² 2p⁶ 3s² 3p⁵
- This configuration corresponds to Chlorine (Cl), which is in Group 17. Not the same group.
Conclusion
Only Option C (1s² 2s² 2p⁶ 3s² 3p¹) corresponds to Aluminum, which is in the same group (Group 13) as Gallium. Thus, it is the correct answer.