Which is an example of a covalent bond? chlorine accepts an electron from calcium to form a stable bond. ions in a bar of pure iron are surrounded by a large number of valence electrons. there are less than 16 valence electrons in 2 chlorine atoms, but they form a stable bond.

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.  

hurricanes form in warm water