AP EAMCET · Chemistry · Structure of Atom
Which of the following element has two electrons in Q shell in its ground state?
- A \(\mathrm{Ba}\)
- B \(\mathrm{Ra}\)
- C \(\mathrm{La}\)
- D \(\mathrm{Pb}\)
Answer & Solution
Correct Answer
(B) \(\mathrm{Ra}\)
Step-by-step Solution
Detailed explanation
Q shell \(\Rightarrow \mathrm{n}=7\) indicates the position of the element in period 7 in the periodic table. \(\mathrm{Ra}\) : electronic configuration \(=4 \mathrm{~s}^2\) (valence shell \()\)
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