Alkali metals colour a flame because heat excites the electron that is:
AOutermost
BInnermost
CNuclear
DShared
Answer & Solution
Correct answer: A. Outermost
1. The flame supplies energy to the atom.
2. One electron jumps to a higher level and falls back.
3. That is the outermost orbital electron.
_Source: NCERT Class 11 Chemistry Part II, Unit 10, The s-Block Elements._
Related questions
Among the alkali metals, the most powerful reducing agent is:Alkali metals are useful as electrodes in cells that are:Alkali metals can be determined by flame photometry or by spectroscopy that is:Alkali metals have low density because of their:All the alkali metals are described as silvery white, light and:The diagonal relationship is due to similarity in ionic size and the ratio of:The resemblance of lithium to magnesium is called the relationship that is:Lithium shows similarities to which element?