Three elements X, Y and Z are in the 3rd period of the periodic table. The oxides of X, Y and Z, respectively, are basic, amphoteric and acidic. The correct order of the atomic numbers of X, Y and Z is:

Correct Option - 3


Detailed Solution:

On moving left to right in a period.

Acidic character of oxides is increase.

3rd period element oxides.

(i) Acidic character

(ii) Atomic No?

So  have minimum Atomic No

&Z have maxima Atomic No

So correct order is 

 

 

<p>On moving left to right in a period.</p><p>Acidic character of oxides is increase.</p><p>3rd period element oxides.</p><div class="photo-widget-full"><div class="figure"><picture><source srcset="" media="(max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/1756124083phpfj2zEK.jpeg" alt="" width="754" height="91" loading="lazy"></picture></div><div class="figure"><p>(i) Acidic character &lt;!-- [if gte msEquation 12]><m:oMath><span style='font-family:"Cambria Math",serif'><m:r><m:rPr><m:scr m:val="roman"/><m:sty m:val="p"/></m:rPr>↑</m:r></span></m:oMath><![endif]--&gt;&lt;!-- [if !msEquation]--&gt;&lt;!-- [if gte vml 1]><v:shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"> <v:stroke joinstyle="miter"/> <v:formulas> <v:f eqn="if lineDrawn pixelLineWidth 0"/> <v:f eqn="sum @0 1 0"/> <v:f eqn="sum 0 0 @1"/> <v:f eqn="prod @2 1 2"/> <v:f eqn="prod @3 21600 pixelWidth"/> <v:f eqn="prod @3 21600 pixelHeight"/> <v:f eqn="sum @0 0 1"/> <v:f eqn="prod @6 1 2"/> <v:f eqn="prod @7 21600 pixelWidth"/> <v:f eqn="sum @8 21600 0"/> <v:f eqn="prod @7 21600 pixelHeight"/> <v:f eqn="sum @10 21600 0"/> </v:formulas> <v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"/> <o:lock v:ext="edit" aspectratio="t"/></v:shapetype><v:shape id="_x0000_i1025" type="#_x0000_t75" style='width:5pt; height:13pt'> <v:imagedata src="file:///C:/Users/ALOK~1.SIN/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png" o:title="" chromakey="white"/></v:shape><![endif]--&gt;&lt;!-- [if !vml]--&gt;<img src="file:///C:/Users/ALOK~1.SIN/AppData/Local/Temp/msohtmlclip1/01/clip_image002.png" width="7" height="17">&lt;!--[endif]--&gt;&lt;!--[endif]--&gt;</p><p>(ii) Atomic No?</p><p>So &lt;!-- [if gte msEquation 12]><m:oMath><i style='mso-bidi-font-style:normal'><span style='font-family:"Cambria Math",serif'><m:r>X</m:r></span></i></m:oMath><![endif]--&gt;&lt;!-- [if !msEquation]--&gt;&lt;!-- [if gte vml 1]><v:shape id="_x0000_i1025" type="#_x0000_t75" style='width:7.5pt;height:13pt'> <v:imagedata src="file:///C:/Users/ALOK~1.SIN/AppData/Local/Temp/msohtmlclip1/01/clip_image003.png" o:title="" chromakey="white"/></v:shape><![endif]--&gt;&lt;!-- [if !vml]--&gt;<img src="file:///C:/Users/ALOK~1.SIN/AppData/Local/Temp/msohtmlclip1/01/clip_image004.png" width="10" height="17">&lt;!--[endif]--&gt;&lt;!--[endif]--&gt;&nbsp;have minimum Atomic No</p><p>&amp;Z have maxima Atomic No</p><p>So correct order is&nbsp;</p><div class="photo-widget-full"><div class="figure"><picture><source srcset="" media="(max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/1756124142phpRQcODz.jpeg" alt="" width="120" height="37" loading="lazy"></picture></div></div><p>&nbsp;</p><p>&lt;!--[endif]--&gt;&lt;!--[endif]--&gt;</p></div></div><p>&nbsp;</p>

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