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Q. The value of n in the molecular formula $Be_{n}Al_{2}Si_{6}O_{18}$ is

NTA AbhyasNTA Abhyas 2020Chemical Bonding and Molecular Structure

Solution:

For BenAl2Si6O18


According to charge balance in a molecule,


2n + 6 + 24 - 36 = 0


This gives, n = 3