Science, asked by ushad1588, 5 months ago

मेंडलीफ की आवर्त सारणी के 3 उपलब्धियां लिखिए

Answers

Answered by Aartityagi3414

0

Explanation:

सलामत शुक्ला कच्ची कला कला कला कला कला कला कला कला

Answered by priyaayika

3

Explanation:

आवर्त सारणी व्यवस्थित करते समय मेंडलीफ को सारणी में अधिक द्रव्यमान वाले तत्व को कभी-कभी कम द्रव्यमान वाले तत्व से पहले रखना पड़ा। ... कोबाल्ट (परमाणु द्रव्यमान 58.9) सारणी में निकैल (परमाणु द्रवमान 58.7) से पहले है।

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