alleryWhich of the following has the largest atomic radius?
APotassium
BSodium
CLithium
DHydrogen
Answer & Solution
Correct answer: A. Potassium
1. Atomic radius grows down a group as more shells are added.
2. Hydrogen has only one shell (smallest).
3. Among the alkali metals listed, potassium is the lowest in Group 1.
4. So potassium has the largest radius of the four.
5. Caesium would be larger still but is not in the options.
_Source: syllabus Science Ch 5 'Periodic Classification of Elements'_
Keep practising Periodic Classification of Elements
Browse all Periodic Classification of Elements questions for Andhra Pradesh SSC (Class 10), or explore more Science topics.
Related questions
Which of the following set of elements is written in order of their increasing metallic chOn moving from left to right in a period in the periodic table, the size of the atom.Which one of the following does not increase while moving down the group of the periodic tWhich of the following elements will form an acidic oxide?Three elements B, Si and Ge areWhat type of oxide would Eka-aluminium form?Arrange the following elements in the order of their increasing non-metallic character Li,Arrange the following elements in the order of their decreasing metallic character Na, Si,