On a meter stick, one centimeter is generally a)length of the whole stick b)length of the one hundred sticks c)distance between two of the numbered lines d)distance between two of the small, unnumbered lines need asap

1. they vary with a higher number because boiling is way hotter than melting

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.

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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.  

im doing test rn im going with 2 but ill give answer if itss wrong,   : )