A part of the early classification of elements has been given below:
H Li Be B C N O
F Na Mg Al Si P S
(a) Which law of classification of elements is illustrated by the above arrangement of elements?
(b) Name the scientist who proposed such a classification of elements.
(c) Why is such a classification of elements compared with a characteristic of musical scale?
(d) State one limitation of this classification of elements.
(a) Newlands’ law of octaves.
(b) Newlands.
(c) This classification of elements is compared with a characteristic of musical scale because in this classification, the repetition in the properties of elements is just like the repetition of eighth note in an octave of music.
(d) This classification of elements could be applied only up to the element calcium and not beyond that.