Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2018Chemistryp Block Elements (Group 13 & 14)Actual

Which one of the following elements is unable to form MF 6 3 - ion?

Options

  1. AB
  2. BAl
  3. CGa
  4. DIn

Correct answer

A. B

Step-by-step solution

MF 6 3 − Boron belongs to 2 nd period and it does not have vacant d - orbital. It can form only 3   and   4 bond and cannot form 6 bond.

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