Give the location of the elements found in the periodic table which have the same valence electrons. all members in group viii only all members within any group all members within any period all the nonmetals

Valence is the same in every family... except for transition metals, it goes from 1-8

dk if that helped

the correct answer is "all members within any period"

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.