Teaching EMRS JSA (Junior Secretariat Assistant) Mock Test Series 2023 General Science Chemistry Chemistry in Everyday Life

নিচের কোনটি সবচেয়ে তড়িৎ ঋণাত্মক মৌল?

1
ব্রোমিন 
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ফ্লুরিন 
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ক্লোরিন 
4
আয়োডিন 
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