Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main20253 Apr 2025Morning ShiftChemistryd and f Block ElementsActual

Consider the following reactions aligned & CrO ₂ Cl _ 2( Vapour ) + NaOH ~B + NaCl + H ₂ O & ~B + H ⁺ C + H ₂ O aligned The number of terminal ' O ' present in the compound ' C ' is ______.

Correct answer

0

Step-by-step solution

aligned & Cr ₂ O ₇²⁻+ NaCl + H ₂ SO ₄ CrO ₂ Cl ₂ & CrO ₂ Cl ₂( Vapour )+ NaOH Na ₂ CrO ₄+ NaCl + H ₂ O aligned Na ₂ Cr ₂ O ₇ 2 Na ^ + Cr ₂ O ₇²⁻ No of terminal "O" = 6

Practice d and f Block Elements on Quantrex Academy →

More from d and f Block Elements

Given below are two statements: Statement I: The number of pairs among [ Ti ⁴⁺, V ²⁺] , [ V ²⁺, Mn ²⁺] , [ Mn ²⁺, Fe ³⁺] and [ V ²⁺, Cr ²⁺] in which both ions are coloured is 3 . S 2026Given below are two statements for catalytic properties of transition metals. Statement I: First row transition metals which act as catalyst utilise their 3d electrons only for 2026The correct order of first ( _i H₁) and second ( _i H₂) ionisation enthalpy values of Cr and Mn are : A. _i H₁ : Cr > Mn B. _i H₂ : Cr > Mn C. _i H₁ : Mn > Cr D. _i H₂ : Mn > Cr Ch 2026The correct statements among the following are. A. Basic vanadium oxide is used in the manufacture of H ₂ SO ₄ . B. The spin-only magnetic moment value of the transition metal hali 2026Given below are two statements : Statement I: Presence of large number of unpaired electrons in transition metal atoms results in higher enthalpies of their atomisation. Statement 2026A paper dipped in a dil. H₂SO₄ solution of ' X ' upon treatment with SO₂ gas turns into green. The compound ' X ' is : 2026Which of the following is NOT a physical or chemical characteristics of interstitial compounds? 2026Pairs of elements with the same number of electrons in their respective 4f orbital are [Atomic number. Eu-63, Gd-64, Dy-66, Ho-67, Tm-69, Yb-70, Lu-71, Hf-72] A. (Eu and Gd) B. (Dy 2026 Full d and f Block Elements list All JEE Main PYQs