नायोबियम क्या है?

Asked Jul 24, 2023 Modified Jul 24, 2023 Viewed 0 times
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asked Jul 24, 2023 at 10:21
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नायोबियम – एक रासायनिक तत्व, परमाणु क्रमांक 41, परमाणु भार 92.904।
answered Jul 24, 2023 at 10:21

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