Quick Answer: Why sodium is soft and diamond is hard?

Diamond is harder than graphite because each of its carbon atoms form four covalent bonds in a tetrahedral structure and also due to the presence of strong covalent bonds in it. … Therefore, diamond is hard but graphite is soft and slippery even though both have carbon present in them.

Why is diamond very hard?

The outermost shell of each carbon atom has four electrons. In diamond, these electrons are shared with four other carbon atoms to form very strong chemical bonds resulting in an extremely rigid tetrahedral crystal. It is this simple, tightly-bonded arrangement that makes diamond one of the hardest substances on Earth.

Why is sodium soft?

sodium $left( text{Na} right)$: Sodium element is present in group 1 due to presence of one valence electron. It has a large atomic size, because of all these reasons sodium metal is a soft metal. Moreover, the metallic bonding in sodium is not strong, hence it can be easily cut.

Is diamond hard or soft Why?

Diamond is hard due to its giant covalent lattice and it has many strong covalent bonds.

IT IS SURPRISING:  You asked: Can you Delevel corrupted gems?

Why is diamond not soft?

Diamond is a form of carbon in which each carbon atom is joined to four other carbon atoms, forming a giant covalent structure. As a result, diamond is very hard and has a high melting point. This explains why it is used in cutting tools.

How hard are diamonds?

How hard is a diamond? A diamond is 58 times harder than the next hardest mineral on earth, which is corundum. … If diamonds are hit with a hammer, they will shatter into lots of small pieces, or even splinter. Besides jewellery, diamonds are used for other purposes as well.

Why is diamond hard kids?

It is the molecular structure ofdiamonds that makes them so hard. Diamonds are made of carbon atoms linked together in a lattice structure. Each carbon atom shares electrons with four other carbon atoms, forming a tetrahedral unit. This tetrahedral bonding of five carbon atoms forms an incredibly strong molecule.

Is sodium a hard or soft metal?

Sodium is a very soft silvery-white metal. Sodium is the most common alkali metal and the sixth most abundant element on Earth, comprising 2.8 percent of Earth’s crust.

Why NA is softer than MG?

Magnesium atoms also have a slightly smaller radius than sodium atoms, and so the delocalized electrons are closer to the nuclei. Each magnesium atom also has twelve near neighbors rather than sodium’s eight. Both of these factors increase the strength of the bond still further.

Which is the softest metal?

Cesium is considered the softest metal, Lead is also considered among the softest metals. Answer 3: Mercury is liquid (molten) at room temperature. Gallium, while solid (if soft) at room temperature, is liquid at body temperature.

IT IS SURPRISING:  Which country produces the best rubies?

Why is diamond much harder than graphite?

However, diamond is harder than graphite because of the carbon atoms in a diamond form 4 covalent bonds in the form of tetrahedral structure. While the carbon atoms in the graphite form 4 covalent bonds in the form of hexagonal structure. … This is the reason why diamond is harder than graphite.

Why diamond is bad conductor?

As we know diamond is a giant covalent structure i.e. each carbon atom is covalently bonded with other carbon atoms. So the four outermost electrons, four carbon atoms, are engaged or trapped in the covalent bonds which means that there are no free electrons. … So diamond is a bad conductor of electricity.

Why is diamond hard BBC Bitesize?

The three-dimensional arrangement of carbon atoms, held together by strong covalent bonds, makes diamond very hard. … Diamond has a very high melting point because a large amount of energy is needed to overcome the many strong covalent bonds.

Why graphite is smooth and slippery?

Graphite is soft and slippery because its carbon atoms are bound together by weak bonds known as Van der Waal forces. … The bonds that connect the carbon atoms in graphite are very weak, so they are easily broken, which makes graphite seem soft and slippery.

Is carbon hard or soft?

Diamonds are made of carbon. They are among the hardest of materials and are used to cut glass and steel. Graphite is also a form of the element carbon.

Why is coal hard and chunky?

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.

IT IS SURPRISING:  Is it worth it to make a diamond AXE?