Consider an atom with 6 protons, 6 neutrons, and 6 electrons. state the number of protons, neutrons, and electrons that would occur in a different isotope of the same element, and explain what changed by relating the change to the definition of an isotope.

Explanation:

An isotope is defined as the specie which contains same number of protons but different number of neutrons.  

For example, and are isotopes.

In a neutral carbon atom, there are 6 protons and 6 neutrons.

As it is known that in a neutral atom the number of protons equal to the number of electrons.

This means that in a neutral carbon atom there are also 6 electrons.

Whereas is an isotope of carbon atom whose atomic number is 6 and atomic mass is 13.

Hence, calculate the number of neutrons in as follows.

                   Atomic mass = no. of protons + no. of neutrons

                              13 = 6 + no. of neutrons

                       no. of neutrons = 13 - 6

                                                  = 7

Hence, in a isotope of carbon atom there are 6 protons, 6 electrons and 7 neutrons.

This shows that change in number of neutrons take place according to the definition of an isotope.

points

explanation:

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.