MCQ
Cu ( परमाणु संख्या 29 ) का इलेक्ट्रॉनिक विन्यास है :
- A$1 \mathrm{~s}^{2}, 2 \mathrm{~s}^{2} 2 \mathrm{p}^{6}, 3 \mathrm{~s}^{2} 3 \mathrm{p}^{6}, 4 \mathrm{~s}^{2} 3 \mathrm{~d}^{9}$
- ✓$1 \mathrm{~s}^{2}, 2 \mathrm{~s}^{2} 2 \mathrm{p}^{6}, 3 \mathrm{~s}^{2} 3 \mathrm{p}^{6} 3 \mathrm{~d}^{10}, 4 \mathrm{~s}^{1}$
- C$1 \mathrm{~s}^{2}, 2 \mathrm{~s}^{2} 2 \mathrm{p}^{6}, 3 \mathrm{p}^{2} 3 \mathrm{p}^{6}, 4 \mathrm{~s}^{2} 4 \mathrm{p}^{6}, 5 \mathrm{~s}^{2} 5 \mathrm{p}^{1}$
- D$1 \mathrm{~s}^{2}, 2 \mathrm{~s}^{2} 2 \mathrm{p}^{6}, 3 \mathrm{p}^{2} 3 \mathrm{p}^{6}, 4 \mathrm{~s}^{2} 4 \mathrm{p}^{6} 3 \mathrm{~d}^{3}$