Dark matter may explain <span>unexpected orbital velocities of stars in galaxies.</span>
Answer: One neutron
Explanation:
one neutron 1/0n
Sum up the mass numbers on the right 99 + 135 + 2 = 236.
The sum of the mass numbers on the left should equal 236. 235 + 1 = 236
OPTION D is the correct answer.
Refer to the attachment for complete calculation...
The visible<span> light </span>spectrum<span> is a fractional </span>part of the electromagnetic spectrum, which is visible<span> due to our eyes, which are light receptors. </span>Invisible spectrum<span> are things like UV </span>spectrum<span> which falls outside the human </span>visible<span> range.</span>