Home
Class 11
CHEMISTRY
The number of elements among the followi...

The number of elements among the following that do not give characteristic colour in flame test is ....
Ca, Li, Mg, Be, Ba, Sr, Na, K

Text Solution

Verified by Experts

The correct Answer is:
2
Be and Mg atoms are smaller in size their electrons are tightly bound to the nucleus. They need large amounts of energy for excitation of electrons to higher energy levels which is not available in the Bunses flame. So they do not impart colour to the flame.
Promotional Banner

Topper's Solved these Questions

  • S-BLOCK ELEMENTS

    BRILLIANT PUBLICATION|Exercise LEVEL-III (Matching Column Type)|7 Videos

  • S-BLOCK ELEMENTS

    BRILLIANT PUBLICATION|Exercise LEVEL-III (Statement Type)|5 Videos

  • S-BLOCK ELEMENTS

    BRILLIANT PUBLICATION|Exercise LEVEL-III (Multiple Choice Question)|10 Videos

  • REDOX REACTIONS

    BRILLIANT PUBLICATION|Exercise LEVEL -III|50 Videos

  • SOME BASIC CONCAPTS OF CHEMISTRY

    BRILLIANT PUBLICATION|Exercise LEVEL-III (Linked Comprehension Type)|6 Videos

Similar Questions

Explore conceptually related problems

The salts of which one of the folloiwng elements do not impart characteristic colour of the Bunsen flame?

Which among the following may give a blood red colouration, during Lassaigne's test for nitrogen?

Which of the following gives hydrated salts.Li, Na,K,or Cs?

The alkali metals and their salts impart characteristic colour to an oxidising flame.Give the flame colour of Na and K.