Match List I with List II.
| LIST I Alkali Metal |
LIST II Emission Wavelength in nm |
||
|---|---|---|---|
| A. | Li | I. | 589.2 |
| B. | Na | II. | 455.5 |
| C. | Rb | III. | 670.8 |
| D. | Cs | IV. | 780.0 |
Choose the correct answer from the options given below :
Solution
<p>To match List I (Alkali Metals) with List II (Emission Wavelength in nm), we need to know the characteristic emission lines of these elements. Here is the information for the typical emission wavelengths:</p>
<ul>
<li><b>Lithium (Li):</b> 670.8 nm</li>
<li><b>Sodium (Na):</b> 589.2 nm</li>
<li><b>Rubidium (Rb):</b> 780.0 nm</li>
<li><b>Cesium (Cs):</b> 455.5 nm</li>
</ul>
<p>Now let's match these with the given options:</p>
<ul>
<li><b>A. Li (III):</b> 670.8 nm</li>
<li><b>B. Na (I):</b> 589.2 nm</li>
<li><b>C. Rb (IV):</b> 780.0 nm</li>
<li><b>D. Cs (II):</b> 455.5 nm</li>
</ul>
<p>Therefore, the correct answer is:</p>
<p>Option B<br>
<p>(A)-(III), (B)-(I), (C)-(IV), (D)-(II)</p></p>
About this question
Subject: Chemistry · Chapter: s-Block Elements · Topic: Alkali Metals
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