Question

Suppose that a hypothetical atom gives a red, green, blue and violet line spectrum . Which jump according to figure would give off the red spectral line.

• A. $\text{3 } \rightarrow 1$
• B. $2 \rightarrow 1$
• C. $4 \rightarrow 1$
• D. $3 \rightarrow 2$

Answer 1

Answer: (D)

$3 \rightarrow 2$

Answer 2

According to energy, $E_{\text{4 } \rightarrow 1}\text{ > }\text{E}_{\text{3 } \rightarrow \text{ 1}}\text{ > }\text{E}_{\text{2 } \rightarrow \text{ 1}}\text{ > }\text{E}_{\text{3 } \rightarrow 2}\text{ .}$

According to energy, Violet > Blue > Green > Red.

$\therefore$ Red line $\Rightarrow$ 3$\rightarrow$2 transition.