The right answer is the first molecule (3-methyl-butan-2-one).
There are many bands around 2900-3000 cm-1 proving the presence de C-H bound.
There an intense band in 1700 cm-1 proving the presence of C=O.
There's no band proving the presence of aromatic structure, C=C bond nor C-N bond.
for the first one it is B OR THE SECOND OPTION
An alpha particle is identical to a helium atom that has been stripped of its two electrons
Which of these what?
This isn't clear, can you put the answer choice or something?
Can't say i can answer this. :/