RRB JE practice question
If two isotopes of an element ‘X’ are X-35 and X-37, the average atomic mass of chlorine (if X-35 = 25% and X-37 = 75%) will be:
From a RRB JE Science practice set · Science
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Correct answer: (D) 36.5 u
Average atomic mass = (35x0.25) + (37x0.75) = 8.75 + 27.75 = 36.5 u.
हिंदी में प्रश्न
यदि किसी तत्व ‘ X’ के दो समस्थानिक X-35 और X-37 हैं, तो क्लोरीन (यदि X-35 = 25% और X-37 = 75%) का औसत परमाणु द्रव्यमान _____ होगा।
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उत्तर और व्याख्या देखें
सही उत्तर: (D) 36.5 u
औसत परमाणु द्रव्यमान = (35x0.25) + (37x0.75) = 8.75 + 27.75 = 36.5 u।
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