Newlands proposed the law of octaves. mendeleev suggested eight groups for elements in his table. how do you explain these observations in terms of modern periodic classification?
Answers
● According to Newlands,every element starting from a given element resembles in its properties to that of the starting element,when elements are arranged in ascending order of their atomic weights.
● According to Newlands, the properties of fluorine and chlorine are similar and sodium and potassium are similar same as packed is given by modern periodic table.
● Mendeleeff divided it into horizontal rows and vertical columns.He called them as periods and groups respectively. Modern Periodic table also shows the same.
● According to mendeleef the elements of same group have same properties. Modern Periodic Table also proposed the same thing.
● Mendeleeff gave the general formula for first group elements as R2O and the general for second group elements as RO. We can find the same thing in Modern Periodic Table.
● The elements of particular group possess same common valency same was proposed by Modern Periodic Table.