NEET UG CHEMISTRY MCQ: 13 TH GROUP ELEMENTS (P-BLOCK)

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Colemanite is an important mineral of boron. It is represented

\mathrm{Ca}_2 \mathrm{~B}_x \mathrm{O}_{11} \cdot 6 \mathrm{H}_2 \mathrm{O}

. What is the value of

x

View answer and explanation

Correct option: A

Option A (6) is correct because the formula of Colemanite is

Ca_2B_6O_{11} \cdot 5H_2O

, so x = 6.

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