Chlorofluorocarbons such as ccl 3 f and ccl 2 f 2 have been linked to ozone depletion in antarctica. as of 1994, these gases were found in quantities of 261 and 509 parts per trillion (10 12 ) by volume (world resources institute, world resources 1996–97). compute the molar concentration of these gases under conditions typical of (a) the mid-latitude troposphere (10°c and 1.0 atm) and (b) the antarctic stratosphere (200 k and 0.050 atm).

the answer is a and have a great day

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.  

is there any options? maybe im just not seeing them but i need the options to

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