s-block element which cannot be qualitatively confirmed by the flame test is :
Solution
Beryllium does not give flame test because of its
small size and high ionization energy the energy of
flame is not sufficient to excite the electrons to
higher energy level.
About this question
Subject: Chemistry · Chapter: s-Block Elements · Topic: Alkali Metals
This question is part of PrepWiser's free JEE Main question bank. 96 more solved questions on s-Block Elements are available — start with the harder ones if your accuracy is >70%.