Which of the following is a characteristic of science? it asks questions about the natural world it asks questions about that cannot be tested it is done by only one scientist at a time it usws options to make conclusions

it asks questions about the natural world it asks questions about that cannot be tested it is done by only one scientist at a time it usws options to make conclusions

Explanation:

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.