Chemistry, asked by VaibhavGupta79, 8 months ago

Need for the classification of elements???​

Answers

Answered by xKALESHIxCHORAx
13

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Need of Classification : It is difficult to study each and every element individually and to know its properties and uses. Therefore, they have been classified into groups on the basis of their similarities in properties.</p><p></p><p>&lt;/head&gt;</p><p></p><p>&lt;body&gt;</p><p></p><p>&lt;div class="container"&gt;</p><p></p><p>&lt;div id="cube"&gt;</p><p></p><p>&lt;div class="front"&gt;Hope It&lt;/div&gt;</p><p></p><p>&lt;div class="back"&gt;Hope It&lt;/div&gt;</p><p></p><p>&lt;div class="right"&gt;Hope It&lt;/div&gt;</p><p></p><p>&lt;div class="left"&gt;Helps&lt;/div&gt;</p><p></p><p>&lt;div class="top"&gt;Helps&lt;/div&gt;</p><p></p><p>&lt;div class="bottom"&gt;Helps&lt;/div&gt;</p><p></p><p>&lt;/div&gt;</p><p></p><p>&lt;/div&gt;</p><p></p><p>&lt;style&gt;</p><p></p><p>body {</p><p></p><p>padding-left: 30%;</p><p></p><p>padding-top: 5%;</p><p></p><p>}</p><p></p><p>.container {</p><p></p><p>width: 200px;</p><p></p><p>height: 200px;</p><p></p><p>position: relative;</p><p></p><p>-webkit-perspective: 1000px;</p><p></p><p>-moz-perspective: 1000px;</p><p></p><p>}</p><p></p><p>#cube {</p><p></p><p>width: 100%;</p><p></p><p>height: 100%;</p><p></p><p>position: absolute;</p><p></p><p>-webkit-transform-style: preserve-3d;</p><p></p><p>-webkit-animation: rotatecube 10s infinite;</p><p></p><p>-moz-transform-style: preserve-3d;</p><p></p><p>-moz-animation: rotatecube 10s infinite;</p><p></p><p>}</p><p></p><p>#cube div {</p><p></p><p>width: 200px;</p><p></p><p>height: 200px;</p><p></p><p>display: block;</p><p></p><p>position: absolute;</p><p></p><p>border: none;</p><p></p><p>line-height: 200px;</p><p></p><p>text-align: center;</p><p></p><p>font-size: 50px;</p><p></p><p>font-weight: bold;</p><p></p><p>}</p><p></p><p>@-webkit-keyframes rotatecube {</p><p></p><p>0% { -webkit-transform: rotateX(0deg) rotateY(360deg) rotateZ(90deg); }</p><p></p><p>25% { -webkit-transform: rotateX(90deg) rotateY(270deg) rotateZ(180deg); }</p><p></p><p>50% { -webkit-transform: rotateX(180deg) rotateY(180deg) rotateZ(0deg); }</p><p></p><p>75% { -webkit-transform: rotateX(270deg) rotateY(90deg) rotateZ(360deg); }</p><p></p><p>100% { -webkit-transform: rotateX(360deg) rotateY(0deg) rotateZ(270deg); }</p><p></p><p>}</p><p></p><p>@-moz-keyframes rotatecube {</p><p></p><p>0% { -moz-transform: rotateX(0deg) rotateY(360deg) rotateZ(90deg); }</p><p></p><p>25% { -moz-transform: rotateX(90deg) rotateY(270deg) rotateZ(180deg); }</p><p></p><p>50% { -moz-transform: rotateX(180deg) rotateY(180deg) rotateZ(0deg); }</p><p></p><p>75% { -moz-transform: rotateX(270deg) rotateY(90deg) rotateZ(360deg); }</p><p></p><p>100% { -moz-transform: rotateX(360deg) rotateY(0deg) rotateZ(270deg); }</p><p></p><p>}</p><p></p><p>.front {</p><p></p><p>background: rgba(255,0,0,.5);</p><p></p><p>}</p><p></p><p>.back {</p><p></p><p>background: rgba(0,255,0,.5);</p><p></p><p>}</p><p></p><p>.right {</p><p></p><p>background: rgba(0,0,255,.5);</p><p></p><p>}</p><p></p><p>.left {</p><p></p><p>background: rgba(0,255,255,.5);</p><p></p><p>}</p><p></p><p>.top {</p><p></p><p>background: rgba(255,0,255,.5);</p><p></p><p>}</p><p></p><p>.bottom {</p><p></p><p>background: rgba(255,255,0,.5);</p><p></p><p>}</p><p></p><p>#cube .front {</p><p></p><p>-webkit-transform: rotateY(0deg ) translateZ( 100px );</p><p></p><p>-moz-transform: rotateY( 0deg ) translateZ( 100px );</p><p></p><p>}</p><p></p><p>#cube .back {</p><p></p><p>-webkit-transform: rotateX( 180deg ) translateZ( 100px );</p><p></p><p>-moz-transform: rotateX( 180deg ) translateZ( 100px );</p><p></p><p>}</p><p></p><p>#cube .right {</p><p></p><p>-webkit-transform: rotateY( 90deg ) translateZ( 100px );</p><p></p><p>-moz-transform: rotateY( 90deg ) translateZ( 100px );</p><p></p><p>}</p><p></p><p>#cube .left {</p><p></p><p>-webkit-transform: rotateY( -90deg ) translateZ( 100px );</p><p></p><p>-moz-transform: rotateY( -90deg ) translateZ( 100px );</p><p></p><p>}</p><p></p><p>#cube .top {</p><p></p><p>-webkit-transform: rotateX( 90deg ) translateZ( 100px );</p><p></p><p>-moz-transform: rotateX( 90deg ) translateZ( 100px );</p><p></p><p>}</p><p></p><p>#cube .bottom {</p><p></p><p>-webkit-transform: rotateX( -90deg ) translateZ( 100px );</p><p></p><p>-moz-transform: rotateX( -90deg ) translateZ( 100px );</p><p></p><p>}</p><p></p><p>&lt;/style&gt;</p><p></p><p>&lt;/body&gt;</p><p></p><p>&lt;/html&gt;

Answered by Maham2001
1

Explanation:

element classify on basis of electronic configuration and valence electrons.

element are classified as there is much difficulty in studying the properties of each element so they are grouped together in groups and periods as in periodic table.

in group the properties of all elements is same.

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