What is the volume of a rectangular object whose dimensions are 5.54 cm, 10.6 cm, and 199 cm? a.117 cm2 b.117 cm3 c.11,700 cm2 d.11,700 cm3

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.  

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence