Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2005Chemistryp Block Elements (Group 13 & 14)Actual

Graphite is soft while diamond is hard because

Options

  1. Adiamond has s p^2 hybridisation but graphite has s p^3 hybridisation
  2. Bgraphite is in planar form while diamond is in tetrahedral form
  3. Cgraphite is covalent and diamond is ionic
  4. Dgraphite is in powder form

Correct answer

B. graphite is in planar form while diamond is in tetrahedral form

Step-by-step solution

In diamond each carbon atom is s p^3 hybridised and is joined to each other by strong covalent bond to form a tetrahedral structure. While in graphite carbon atoms form planar, hexagonal rings to give it a sheet like structure. Each sheet is joined to each other by weak van der Waal force. Hence diamond is harder than graphite.

Practice p Block Elements (Group 13 & 14) on Quantrex Academy →

More from p Block Elements (Group 13 & 14)

Which of the following elements is in allotopic form in fullerene? 2026Identify the incorrect statement from the following : 2026In potash alum, the ratio of K ^+ and SO₄²⁻ ions is 2026Select the element (M) whose trihalides cannot be hydrolysed to produce an ion of the form [ M ( H ₂ O )₆ ]³⁺ 2023Na ₂ ~B ₄ O ₇ heat X + NaBO ₂ in the above reaction the product " X " is : 2022Match List-I with List-II : ( array l|l List-I & List-II (Compounds) & (Molecular formula) (a) Borax & (i) NaBO ₂ (b) Kernite & (ii) Na ₂ ~B ₄ O ₇ 4 H ₂ O (c) Orthoboric acid & (ii 2022Which of the following statement is not correct about diborane? 2022Match the following and identify the correct option. (a) CO g + H 2 g (i) Mg HCO 3 2 + Ca HCO 3 2 (b) Temporary hardness of water (ii) An electron deficient hydride (c) B 2 H 6 (ii 2020 Full p Block Elements (Group 13 & 14) list All NEET PYQs