Home › Maharashtra SSC (Class 10) › Chemistry › Periodic Classification of Elements › Which was a recognised limitation of Newlands' o…
Which was a recognised limitation of Newlands' octaves?
AIt left vacant boxes for the undiscovered elements
BIt had no provision to accommodate newly discovered elements
CIt was based on the number of protons
DIt correctly placed all the transition metals
Answer & Solution
Correct answer: B. It had no provision to accommodate newly discovered elements
1. Newlands fixed all known elements into a rigid 7 x 8 table of 56 boxes.
2. With no spare boxes, later-discovered elements could not be fitted in.
3. Their properties also did not match the octave pattern.
4. Rule out A: leaving vacant boxes was a merit of Mendeleev, not Newlands.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 2 "Periodic Classification of Elements", p.26_
Related questions
A solid salt crystal will not conduct electricity, but the same salt dissolved in water wiWhat actually holds a piece of metal together in metallic bonding?What happens to electrons when an ionic bond is formed?In which type of bonding are pairs of electrons shared between atoms?The property of attracting shared electrons by halogen atoms in a molecule is called:In cathodic protection against corrosion, the metal that is deliberately attached to corroWhy does dilute or concentrated nitric acid fail to react vigorously with aluminium metal?During the smelting of iron in the blast furnace, what is the main role of the limestone (