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Q:

निम्नलिखित मेंसेकिस तत्व की परमाणुत्रिज्या सबसे अधिक है? 

  • 1
    बेरिलियम
  • 2
    लिथियम
  • 3
    नाइट्रोजन
  • 4
    कार्बन
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Answer : 2. "लिथियम"
Explanation :

Francium (Fr) has the highest atomic radius in the periodic table. It belongs to the alkali metals group. Its atomic number is 87. The periodic trend of atomic radius suggests that the atomic radius usually decreases along a period (left to right) and increases down a group (top to bottom).

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