Number of moles of K2Cr2O7 that can be reduced by 1 mole of Sn2+ ions is:

59) Number of moles of K₂Cr₂O₇ that can be reduced by 1 mole of Sn²⁺ ions is:

Answer is:

Answer is:

Explanation:

Change = 4 − (−4) = 8

Answer is:

Answer is:

Explanation:

In F-center
* F−center produces colour to the crystals
* Electrons are held in the void of the crystal
* Conductivity increases

Answer is:

Explanation:

a = 2d⁄√3