alleryStart learning →Which pair of alkali metals was first discovered using the spectroscope?
APotassium and francium
BRubidium and caesium
CLithium and sodium
DSodium and potassium
Answer & Solution
Correct answer: B. Rubidium and caesium
Bunsen and Kirchhoff's spectroscope revealed the new lines of rubidium and caesium.
Keep practising Elements of Group 1 and 2
Browse all Elements of Group 1 and 2 questions for MHT-CET, or explore more Chemistry topics.
Related questions
Which anion is present in sodium peroxide, Na2O2?Which condensed electronic configuration belongs to sodium (Z = 11)?Aluminium, the diagonal partner of beryllium, belongs to which group?Which two group 2 elements are abundant in the earth crust?Which alkaline earth metals are toxic?Alkali metals react with cold water to give hydrogen and a:Which alkali metal reacts with nitrogen at standard conditions?Alkali metals are usually stored under which liquid?