Answer: BF3
Explanation: boron needs 4 electron to obtain octet and Fluorine has just one. For the valence shell to be completely filled it will have to form BF4- with 4 fluorine atom surrounding it.
6.54 x 10^5
When trying to figure out a number in a scientific notation, use this notation!
<span>a*10^<span>b
</span></span>
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1. covalent bonds are strong
2. hydrogen bonds are weak
3. Ionic bonds are weak
