"निष्क्रिय वायू" च्या विविध आवृत्यांमधील फरक
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Mahendra.adt (चर्चा | योगदान) No edit summary |
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ओळ १:
{{बदल}}
in periodic table the last group(18)called as noble gases because their outermost cells is fulfill and valency is zero.
[[वर्ग:मूलद्रव्ये]]
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