If electronegativity difference between atoms is much higher then they form ionic bond.
Hope this helps!
The mass of 2.47 moles of fluorine atom is 46.9 g
calculation
mass of Fluorine= moles x molar mass
moles = 2.47 moles
molar mass of fluorine = 18.998 g/mol
mass is therefore= 2.47 moles x 18.008 g/mol = 46.9 g
I believe it’s a positive charge
The corect answers will be:
1) A
2) B
3) D
Hope this helped :)