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`alpha`-कणो के बड़े कोण से प्रकीर्णन के लिए परमाणु का नाभिक ही उत्तरदायी है, इलेक्ट्रॉन क्यों नहीं?

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इलेक्ट्रॉन `alpha`-कण के सापेक्ष बहुत हल्का होता है। अत: संवेग-संरक्षण के नियमानुसार, इलेक्ट्रॉन,`alpha`-कण को बड़े कोण पर प्रकीर्णित नहीं कर पता।

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