Is it true that gaps were left by Mendeleev for the elements Se, Ga and Ge?

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

True

False

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

The above statement is true.
In 1869, after Newlands Octave Law was rejected, the Mendeleev Periodic table was introduced. In this periodic table, the elements were arranged on the basis of their respective atomic masses.
Mendeleev left spaces in his table for elements that weren't yet understood. He also predicted the characteristics of these unknown elements by examining the chemical and physical characteristics of the elements close to a gap. Mendeleev, for instance, predicted the possibility of "eka-silicon," an element that would fit next to silicon. Later on, the element germanium was found. Its characteristics were discovered to be comparable to those predicted. The properties of the newly found elements, including scandium and gallium, again matched those predicted by Mendeleev.

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th

🔥 Start Your JEE/NEET Prep at Just ₹1999 / month - Limited Offer! Check Now!

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th