General Science- Sodium Parmanu Me Core Electron Ki Sankhya Hai ?

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Q.11018: सोडियम परमाणु में कोर इलेक्ट्रॉन की संख्या है ?
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सोडियम परमाणु में कोर इलेक्ट्रॉन की संख्या है ? General Science in hindi,  2 question answers in hindi pdf  8 questions in hindi, Know About 1 General Science online test General Science notes in hindi quiz book    10

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