Question

Why is diamond clear and hard while graphite is soft? Why is coal hard and chunky?​

Answer 1

$</p><p> </p><p> <div style="</p><p> padding:50px 5px;</p><p> text-align: center;</p><p> font-family:Monoscape;</p><p> background-image: radial-gradient(circle at center center, rgba(108, 78, 11,0.1) 0%, rgba(108, 78, 11,0.1) 58%,transparent 58%, transparent 81%,rgba(144, 96, 58,0.1) 81%, rgba(144, 96, 58,0.1) 100%),linear-gradient(90deg, hsl(68,81%,84%),hsl(68,81%,84%)); background-size: 22px 22px;</p><p> "></p><p> </p><p> <span style="text-align: center; border-bottom:2px double #460eff; color: #460effff; ">Solution To Your Question &#x2193;</span> </p><p> </p><p> <p style="color: black;</p><p> text-shadow:0px 0px 10px rgb(215,240,204);</p><p> text-align: center;</p><p> font-weight: 500; "></p><p> </p><p></p><p></p><p>Diamond and graphite both only have carbons and have covalent bonding involved. ... Graphite is soft because it has weak inter molecular forces between its layers. Diamond is hard due to its giant covalent lattice and it has many strong covalent bonds.</p><p></p><p> </p><p></p><p>Coal is a combustible sedimentary rock occurring in rock strata in layers or veins called coal beds. Because of pressure and elevated temperature the carbon becomes hard and chunky.</p><p></p><p> </p><p> &#128513; Hope You Liked It &#128513;</p><p> </p></p><p> </p><p> </p><p> <marquee style="color:#000;"> <b>Mark Me as the brainliest and Follow Me &#128151;</p><p> </p><p> </b></marquee></p><p> </p><p> </p><p> </p><p> </div></p><p> </p><p> </p><p>$

Answer 2

• A diamond crystal is a giant molecule of carbon atoms. Each carbon atom in the diamond crystal is linked to four other carbon atoms by strong covalent bonds. The four surrounding atoms are at four vertices of a regular tetrahedron. This rigid structure of diamond makes it a very hard substance.Graphite is soft because it has weak inter molecular forces between its layers.

• Coal is a combustible sedimentary rock occurring in rock strata in layers or veins called coal beds. Because of pressure and elevated temperature the carbon becomes hard and chunky.