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Question
K₂Cr₂O₇ যৌগের Cr এর জারণ মান কত?
+6
-3
+4
-4
ANSWER : 1
Descrption
<p>ধরি, Cr এর জারণ মান X<br>∴ (1×2) + (X×2) + (-2×7) = 0<br>বা, 2 + 2X - 14 = 0<br>বা, 2X = 12<br>∴ X = 6</p><p>অতএব, K2Cr2O7 যৌগের Cr এর জারণ মান +6</p>
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