Definite mandeleev's periodic table . Its merits and demerits
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merits
he leaved place for unknown elements .he gave anomolous pairs. he used the groups and periods. he corrected the weights of berilium
demerits
he did not able to show the exact reason for anomolous pairs.
he leaved place for unknown elements .he gave anomolous pairs. he used the groups and periods. he corrected the weights of berilium
demerits
he did not able to show the exact reason for anomolous pairs.
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