railway RRB JE (CBT I + CBT II) Mock Test 2024 General Science Chemistry Chemical Bond and Molecular Structure

নিম্নলিখিত কোন অণুতে দুটি পরমাণুর মধ্যে ত্রিবন্ধন আছে?

1
F2
2
Cl2
3
N2
4
O2
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