¿Por qué en la tabla periodica los elementos de un mismo grupo están dispuestos uno debajo del otro?

Ill give brainiestif one neutron initiates a fission event that produces two neutrons in the products, how many new reactions can now be initiated? if each of the neutrons produced in the first fission event then initiates a fission event that produces one neutron in the products, how many new reactions can now be initiated by each neutron? how many neutrons in total were produced by the two fission events described?

How does the motion of particles in a gas change as the gas cools

What extra step distinguishes fermentation from glycolysis