When the following molecular equation is balanced using the smallest possible integer coefficients, the values of these coefficients are: mercury(II) oxide (s)
mercury (l) +
oxygen (g)

The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic

Um i think answer is a

Provide more information for : )

B.1 - hydrogren-1 can only mean there is 1 neutron. it's obvious there is 1 proton or else it wouldn't be hydrogen, so they wouldn't put a number after it unless they were indicating the number of neutrons