The Bohr radius of a hydrogen like species is 70.53 pm . The species and the stationary state (n) are respectively
(Given : Hydrogen atom Bohr radius is 52.9 pm )
If shortest wavelength of hydrogen atom in Lyman series is $x$, then longest wavelength in Balmer series of $\mathrm{He}^{+}$is:
$$ \text { Match the LIST-I with LIST-II } $$
| List-I Orbital |
List-II Radial nodes and nodal plane |
||
|---|---|---|---|
| A. | 2s | I. | 1 Radial node + two nodal planes |
| B. | 3s | II. | 1 Radial node + one nodal plane |
| C. | 3p | III. | 2 Radial nodes + No nodal plane |
| D. | 4d | IV. | 1 Radial node + No nodal plane |
Which of the following statement(s) is/are true ?
A. If two orbitals have the same value of ( $\mathrm{n}+l$ ), the orbital with lower value of n will have lower energy.
B. Energies of the orbitals in the same subshell increase with increase in atomic number.
C. The size of $2 \mathrm{p}_x$ orbital is less than the size of $3 \mathrm{p}_x$ orbital.
D. Among 5f, 6s, 4d, 5p and 5d orbitals, none of the orbitals have 2 radial nodes.
Choose the correct answer from the options given below :
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