Electrons are attracted to protons other electrons neutrons all the particles

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both