A chemistry student is experimentally determining the boiling point of bromine. The experimental melting points are listed
below from a toe. Which one should he discard so that he can
say his data is precise?
a 59.1°C
b 59.0 °C
C 58.8 °C
d 58.5 °C
e 56.3 °C

discard e

Explanation:

all other temps are within 1 degree and therefore appear more precise than having an outlyer

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.  

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but