Henry Moseley

Who discuss the properties of elements by plotting a graph between frequency of X-Ray and atomic number of each element?

Classification of element and periodicity in properties In 1800 how many elements were known ? A 31 B 35 C 53 D 30 Which group of elements indicate the doberenier triads ? A Ca,Sr,Na B Li,Na,Ba C Li,Na,K D Cl,Br,F Which Medal is given by the royal society of London to newlands in 1887 ? […]

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