Chemistry - PERIODIC TABLE Question with Solution | TestHub
ChemistryPERIODIC TABLEAtomic Size, ZeffMedium2 minQB
ChemistryMediumsingle choice
Statement I : Ba have highest atomic radius among s-block elements excluding radioactive elements. Statement II : Down the group atomic size generally increases.
Options:
Answer:
D
Solution:
Statement I is incorrect because among non-radioactive s-block elements, Cs (cesium) has the highest atomic radius, not Ba.
Cs belongs to Group 1, Period 6, while Ba belongs to Group 2 of the same period.
Statement II is correct: atomic radius generally increases down a group due to the addition of new electron shells.
Therefore, Statement I = incorrect and Statement II = correct.
Hence, the correct answer is D
Stream:JEESubject:ChemistryTopic:PERIODIC TABLESubtopic:Atomic Size, Zeff
⏱ 2mℹ️ Source: QB
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