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Why melting point of diamond is higher than that of silicon carbide?

Anonymous

∙ 8y ago

Updated: 9/27/2022

Diamond is a covalent network solid, and those types of compounds have higher melting points than other types of compound.

Wiki User

∙ 8y ago

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Q: Why melting point of diamond is higher than that of silicon carbide?

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Why is diamond a unusual non metal?

Diamond is a unique nonmetal because its structure consists of a three-dimensional network of carbon atoms covalently bonded, making it extremely hard and having a high melting point. Additionally, diamond has a high refractive index and exceptional thermal conductivity, distinguishing it from other nonmetals.

Why is the melting point of diamond higher than that of oxygen?

The melting point of a substance is determined by the strength of the bonds between its atoms. In diamond, each carbon atom is covalently bonded to four other carbon atoms in a strong network structure, leading to a high melting point. In oxygen, the diatomic molecules are held together by weaker intermolecular forces, resulting in a lower melting point.

Are melting points of molecular substances higher than those of ionic substance?

Ionic substances have higher melting points.

What happens if boiling point is higher than melting point?

The boiling point is always higher than the melting point.

What Affects the melting temperature of magma?

The composition of the magma plays a significant role in determining its melting temperature. Magma with higher silica content tends to have a higher melting temperature. Pressure also affects the melting temperature; higher pressure usually results in a higher melting temperature. Water content can lower the melting temperature of magma by acting as a flux, allowing minerals to melt at lower temperatures.

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Related Questions

Why diamond has a higher melting point than silicon carbide?

Diamond has a higher melting point than silicon carbide because diamond has strong covalent bonds between its carbon atoms in a three-dimensional lattice structure, making it harder to break apart compared to the bonds in silicon carbide. This results in diamond requiring more energy to overcome these strong bonds and melt.

What substance has higher melting point silicon dioxide or methanol?

Silicon dioxide. Silicon dioxide silica is the mineral quartz and is a giant molecule with a melting point of over 16000C. Methanol is a molecular compound (an alcohol) with a melting point of -980C

Is the melting point for methanol higher than silicon?

No, the melting point of silicon is higher than methanol. Silicon has a melting point of 1414°C, whereas methanol has a melting point of -98°C.

Why silicon carbide is use in cutting tools?

Silicon carbide is used in cutting tools due to its exceptional hardness, high thermal conductivity, and low coefficient of friction. These properties make silicon carbide cutting tools highly resistant to wear and suitable for machining hard materials like metals, ceramics, and composites.

Why Does Chlorine or Silicon have a higher melting point?

Chlorine has a higher melting point than silicon because chlorine molecules are held together by stronger covalent bonds compared to the silicon atoms in silicon. This makes it harder to break the bonds in chlorine, requiring higher temperatures to melt. Silicon has weaker metallic bonds which results in a lower melting point.

Why silicon has a higher melting point than silicon tetrachloride?

Silicon has a higher melting point than silicon tetrachloride because silicon atoms are held together by strong covalent bonds, whereas silicon tetrachloride molecules are held together by weaker van der Waals forces. The covalent bonds in silicon are stronger and require more energy to break, resulting in a higher melting point.

What substance has a higher melting point silicon dioxide or methanol?

Silicon dioxide has a higher melting point than methanol. Silicon dioxide requires temperatures of around 1710 degrees Celsius to melt, while methanol melts at -98 degrees Celsius.

Why does silicon dioxide have a higher melting point than silicon tetra chloride?

Silicon dioxide has a higher melting point than silicon tetrachloride because silicon dioxide forms a network solid structure with strong covalent bonds, requiring more energy to break compared to the weaker forces holding silicon tetrachloride molecules together. Additionally, silicon dioxide molecules are larger and have a higher molecular weight, contributing to a stronger intermolecular forces between the molecules.

Does Chlorine or Silicon have a higher melting point?

Siliocone has a higher one. Chlorine is already a gas at room temperature.

Why is silicon dioxides melting point than oxygen?

Silicon dioxide has a higher melting point than oxygen because the covalent bonds in silicon dioxide are stronger than the diatomic oxygen molecules, requiring more energy to break them apart and transition from solid to liquid state. Additionally, silicon dioxide has a more complex crystal structure with a higher degree of symmetry, contributing to its higher melting point compared to oxygen.

What are example of hardness material?

Diamond, corundum, and silicon carbide are examples of hard materials due to their strong atomic structures and resistance to scratching and abrasion. Hardness is typically measured on the Mohs scale, with materials higher on the scale being harder than those lower on the scale.

Which mealting point is higher neons or silicons?

At STP, neon is a gas, so its melting point is low whereas silicon is a solid, so its melting point is high

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