Science, asked by Anonymous, 11 months ago

what is hydrogen



shkl kahan hh.......xd....​

Answers

Answered by Anonymous
2

Answer:

please mark as brainliest

Explanation:

Hydrogen is the chemical element with the symbol H and atomic number 1. With a standard atomic weight of 1.008, hydrogen is the lightest element in the periodic table. Hydrogen is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Wikipedia

Answered by pinjaraarifisha
1

Answer:

&lt;!DOCTYPE html&gt;</p><p></p><p>&lt;html lang="en"&gt;</p><p></p><p>&lt;head&gt;</p><p></p><p>&lt;title&gt;Captain America Shield&lt;/title&gt;</p><p></p><p>&lt;/head&gt;</p><p></p><p>&lt;div class="container"&gt;</p><p></p><p>&lt;div class="circle outer-lv3"&gt;</p><p></p><p>&lt;div class="circle outer-lv2"&gt;</p><p></p><p>&lt;div class="circle outer-lv1"&gt;</p><p></p><p>&lt;div class="center"&gt;</p><p></p><p>&lt;div class="arrow top"&gt;&lt;/div&gt;</p><p></p><p>&lt;div class="arrow left"&gt;&lt;/div&gt;</p><p></p><p>&lt;div class="arrow right"&gt;&lt;/div&gt;</p><p></p><p>&lt;/div&gt;</p><p></p><p>&lt;/div&gt;</p><p></p><p>&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>html, body {</p><p></p><p>background:#0846A8;</p><p></p><p>height: 500px;</p><p></p><p>}</p><p></p><p>.container {</p><p></p><p>width:100%;</p><p></p><p>height: 100%;</p><p></p><p>display: flex;</p><p></p><p>justify-content: center;</p><p></p><p>align-items: center;</p><p></p><p>}</p><p></p><p>.circle {</p><p></p><p>border-radius: 50%;</p><p></p><p>display: flex;</p><p></p><p>flex-direction: row;</p><p></p><p>justify-content: center;</p><p></p><p>align-items: center;</p><p></p><p>border:1px solid #000;</p><p></p><p>}</p><p></p><p>.outer-lv3 {</p><p></p><p>background-image: linear-gradient(#870000,#FF4040,#870000);</p><p></p><p>height: 260px;</p><p></p><p>width: 260px;</p><p></p><p>-webkit-animation: turning 8s infinite linear;</p><p></p><p>animation: turning 8s infinite linear;</p><p></p><p>}</p><p></p><p>@-webkit-keyframes turning {</p><p></p><p>0% {transform: rotate(0deg)}</p><p></p><p>100% {transform: rotate(360deg)}</p><p></p><p>}</p><p></p><p>@keyframes turning {</p><p></p><p>0% {transform: rotate(0deg)}</p><p></p><p>100% {transform: rotate(360deg)}</p><p></p><p>}</p><p></p><p>.outer-lv2 {</p><p></p><p>background: #fff;</p><p></p><p>background-image: linear-gradient(#DBD9D9,#FAFAFA,#DBD9D9);</p><p></p><p>height: 210px;</p><p></p><p>width: 210px;</p><p></p><p>}</p><p></p><p>.outer-lv1 {</p><p></p><p>background-image: linear-gradient(#870000,#FF4040,#870000);</p><p></p><p>height: 150px;</p><p></p><p>width: 150px;</p><p></p><p>}</p><p></p><p>.center {</p><p></p><p>background-image: linear-gradient(#0846A8,#277AFF,#0846A8);</p><p></p><p>height: 100px;</p><p></p><p>width: 100px;</p><p></p><p>border-radius: 50%;</p><p></p><p>position: relative;</p><p></p><p>overflow: hidden;</p><p></p><p>border:1px solid #000;</p><p></p><p>}</p><p></p><p>.arrow {</p><p></p><p>border-top: 35px solid #EDE8E8;</p><p></p><p>border-bottom: 48px solid rgba(0,0,0,0.0);</p><p></p><p>border-left: 48px solid transparent;</p><p></p><p>border-right: 48px solid transparent;</p><p></p><p>position: absolute;</p><p></p><p>height: 0;</p><p></p><p>width: 0;</p><p></p><p>}</p><p></p><p>.top {</p><p></p><p>top: 35px;</p><p></p><p>left: 2px;</p><p></p><p>}</p><p></p><p>.left {</p><p></p><p>transform: rotate(72deg);</p><p></p><p>top: 16px;</p><p></p><p>left: -24px;</p><p></p><p>}</p><p></p><p>.right {</p><p></p><p>transform: rotate(-72deg);</p><p></p><p>top: 16px;</p><p></p><p>left: 25px;</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;

&lt;!DOCTYPE html&gt;</p><p></p><p>&lt;html lang="en"&gt;</p><p></p><p>&lt;head&gt;</p><p></p><p>&lt;meta charset="UTF-8"&gt;</p><p></p><p>&lt;meta name="viewport" content="width=device-width, initial-scale=1.0"&gt;</p><p></p><p>&lt;title&gt;Arc reacter&lt;/title&gt;</p><p></p><p>&lt;link rel="stylesheet" href="design.css" /&gt;</p><p></p><p>&lt;/head&gt;</p><p></p><p>&lt;body&gt;</p><p></p><p>&lt;div class="fullpage-wrapper"&gt;</p><p>&lt;div class="reactor-container"&gt;</p><p>&lt;div class="reactor-container-inner circle abs-center"&gt;&lt;/div&gt;</p><p>&lt;div class="tunnel circle abs-center"&gt;&lt;/div&gt;</p><p>&lt;div class="core-wrapper circle abs-center"&gt;&lt;/div&gt;</p><p>&lt;div class="core-outer circle abs-center"&gt;&lt;/div&gt;</p><p>&lt;div class="core-inner circle abs-center"&gt;&lt;/div&gt;</p><p>&lt;div class="coil-container"&gt;</p><p>&lt;div class="coil coil-1"&gt;&lt;/div&gt;</p><p>&lt;div class="coil coil-2"&gt;&lt;/div&gt;</p><p>&lt;div class="coil coil-3"&gt;&lt;/div&gt;</p><p>&lt;div class="coil coil-4"&gt;&lt;/div&gt;</p><p>&lt;div class="coil coil-5"&gt;&lt;/div&gt;</p><p>&lt;div class="coil coil-6"&gt;&lt;/div&gt;</p><p>&lt;div class="coil coil-7"&gt;&lt;/div&gt;</p><p>&lt;div class="coil coil-8"&gt;&lt;/div&gt;</p><p>&lt;/div&gt;</p><p>&lt;/div&gt;</p><p>&lt;/div&gt;</p><p></p><p>&lt;style&gt;</p><p></p><p>body { margin: 0; } .fullpage-wrapper { width: 100%; height: 100vh; background: radial-gradient(#353c44, #222931); display: flex; } .reactor-container { width: 300px; height: 300px; margin: auto; border: 1px dashed #888; position: relative; border-radius: 50%; background-color: #384c50; border: 1px solid rgb(18, 20, 20); box-shadow: 0px 0px 32px 8px rgb(18, 20, 20), 0px 0px 4px 1px rgb(18, 20, 20) inset; } .reactor-container-inner { height: 238px; width: 238px; background-color: rgb(22, 26, 27);; box-shadow: 0px 0px 4px 1px #52FEFE; } .circle { border-radius: 50%; } .abs-center { position: absolute; top: 0; right: 0; bottom: 0; left: 0; margin: auto; } .core-inner { width: 70px; height: 70px; border: 5px solid #1B4E5F; background-color: #FFFFFF; box-shadow: 0px 0px 7px 5px #52FEFE, 0px 0px 10px 10px #52FEFE inset; } .core-outer { width: 120px; height: 120px; border: 1px solid #52FEFE; background-color: #FFFFFF; box-shadow: 0px 0px 2px 1px #52FEFE, 0px 0px 10px 5px #52FEFE inset; } .core-wrapper { width: 180px; height: 180px; background-color: #073c4b; box-shadow: 0px 0px 5px 4px #52FEFE, 0px 0px 6px 2px #52FEFE inset; } .tunnel { width: 220px; height: 220px; background-color: #FFFFFF; box-shadow: 0px 0px 5px 1px #52FEFE, 0px 0px 5px 4px #52FEFE inset; } .coil-container { position: relative; width: 100%; height: 100%; animation: 3s infinite linear reactor-anim; } .coil { position: absolute; width: 30px; height: 20px; top: calc(50% - 110px); left: calc(50% - 15px); transform-origin: 15px 110px; background-color:#073c4b; box-shadow: 0px 0px 5px #52FEFE inset; } .coil-1 { transform: rotate(0deg); } .coil-2 { transform: rotate(45deg); } .coil-3 { transform: rotate(90deg); } .coil-4 { transform: rotate(135deg); } .coil-5 { transform: rotate(180deg); } .coil-6 { transform: rotate(225deg); } .coil-7 { transform: rotate(270deg); } .coil-8 { transform: rotate(315deg); } @keyframes reactor-anim { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }</p><p></p><p>&lt;/style&gt;</p><p></p><p>&lt;/body&gt;</p><p></p><p>&lt;/html&gt;

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