Step 1: Use the Radius Formula for Hydrogen-like Atoms
The radius of the first orbit (\( n = 1 \)) is given by: \[ r \propto \frac{n^2}{Z} \] For \( n = 1 \): \[ r \propto \frac{1}{Z} \]
Step 2: Calculate for He\(^+ \)
For He\(^+ \), \( Z = 2 \), \( n = 1 \): \[ r_{\text{He}^+} \propto \frac{1}{2} = 0.5 \]
Step 3: Calculate for Li\(^{2+} \)
For Li\(^{2+} \), \( Z = 3 \), \( n = 1 \): \[ r_{\text{Li}^{2+}} \propto \frac{1}{3} \approx 0.333 \]
Step 4: Find the Ratio
\[ \text{Ratio} = \frac{r_{\text{He}^+}}{r_{\text{Li}^{2+}}} = \frac{0.5}{0.333} = \frac{3}{2} \]
Match the following:
Which of the following is the correct electronic configuration for \( \text{Oxygen (O)} \)?
Match the pollination types in List-I with their correct mechanisms in List-II:
List-I (Pollination Type) | List-II (Mechanism) |
---|---|
A) Xenogamy | I) Genetically different type of pollen grains |
B) Ophiophily | II) Pollination by snakes |
C) Chasmogamous | III) Exposed anthers and stigmas |
D) Cleistogamous | IV) Flowers do not open |