It must gain an electron because if the proton number was to change it would no longer be the same element.
<em>Important thing is that all unitless quantity is dimensionless quantity. .</em><em>A</em><em> dimensionless physical quantity may have an unit</em>
Because although they cannot see it, they can see it's influence on objects that can be seen, and it's effects.
This is true due to the reaction that happens from water evaporating and leaving the sugar crystals behind to form.
Answer:
true about microscopic particle is that they can explain the phenomena of diffraction and interference.
Explanation
the first thing mentioned in question particles are localized in space according to classical physics particle can be well localized in space because its momentum and position can be determine simultaneously .second their properties can be measured and they can act like wave particle by particle build up a wave. so all of they things mention above only thing true about particles is that they describe the phenomena of diffraction and interference.
