According to Le Chatelier's principle, what happens when the concentration of reactants is doubled in a chemical reaction
that was in equilibrium?
The equilibrium shifts to the right to favor the formation of produinte

No. an alpha particle is a pair of protons and a pair of neutrons, i.e. a helium

Aseasonal prevailing wind in the region of south and southeast asia, blowing from the southwest between may and september and bringing rain (the wet monsoon ), or from the northeast between october and april (the dry monsoon ).