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निम्नलिखित परमाणुओं में प्रोटॉनों, इलेक्ट्रॉनों तथा न्यूट्रॉनों की संख्याएँ बताइए : `(i) ""_(2)He^(3), (ii) ""_(6)C^(13),(iii) ""_(7)N^(13), (iv)""_(8

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निम्नलिखित परमाणुओं में प्रोटॉनों, इलेक्ट्रॉनों तथा न्यूट्रॉनों की संख्याएँ बताइए :
`(i) ""_(2)He^(3), (ii) ""_(6)C^(13),(iii) ""_(7)N^(13), (iv)""_(82)Pb^(206), (v) ""_(90)Th^(232), (vi) ""_(92)U^(235),(vii) ""_(56)Ba^(137),(viii) ""_(3)Li^(7).`
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Correct Answer - (i) ` ""_(2)He^(3)` में 2 प्रोटॉन , 2 इलेक्ट्रॉन तथा 1 न्यूट्रॉन ; (ii) 6, 6, 7; (iii) 7, 7, 6; (iv) 82, 82, 124; (v) 90, 90, 142; (vi) 92, 92, 143; (vii) 56, 56, 81; (viii) 3, 3, 4.
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