2. Sample Papers
  3. NEET

NEET Sample Paper NEET Sample Test Paper-8

  • question_answer
    If \[{{r}_{1}}\] is the radius of the first orbit of hydrogen atom, then the radii of second, third and fourth orbitals in terms of \[{{r}_{1}}\] are

    A)  \[r_{1}^{2},r_{1}^{3},r_{1}^{4}\]                   

    B)  \[8{{r}_{1}},27{{r}_{1}},64{{r}_{1}}\]

    C)  \[4{{r}_{1}},9{{r}_{1}},16{{r}_{1}}\]                

    D)  \[2{{r}_{1}},6r,8{{r}_{1}}\]

    Correct Answer: C

    Solution :

    \[{{r}_{n}}={{r}_{o}}{{n}^{2}}\] \[\therefore \]  \[{{r}_{2}}=4{{r}_{1}}\]                 \[{{r}_{3}}=9{{r}_{1}},\] \[{{r}_{4}}=16{{r}_{1}}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner