Order these stars from dimmest to brightest: supergiant, yellow dwarf, giant, and red dwarf.(2 points) red dwarf, yellow dwarf, supergiant, giant
yellow dwarf, red dwarf, giant, supergiant
supergiant, giant, yellow dwarf, red dwarf
red dwarf, yellow dwarf, giant, supergiant

red dwarf, yellow dwarf, giant, supergiant

Explanation:

Super giants and giants tend to be the brightest of the bunch while the yellow dwarf is in its main sequence which is like the sun while the red dwarf is a low mass main sequence meaning low mass= low brightness

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.