state gov BSSC Laboratory Assistant Mock Test Series 2025 Chemistry Chemical Bonding and Molecular Structure

বোরন ট্রাইফ্লুরোরাইড (BF3) -এর আকৃতির সাথে সবচেয়ে সাদৃশ্যপূর্ণ হল

1
\(\rm CH^+_3\)
2
\(\rm CH^-_3\)
3
CH3
4
NH3
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