An element forms an ionic compound with bromine having the formula xbr. if the mass number of the element x is 41 and the ion has 18 electrons, what is the element x and how many neutrons does it have?

X is calcium and it has 21 neutrons

Explanation:

Calcium 41 is an isotope of calcium with mass number of 41 and atomic number of 20

Number of neutrons = mass number - number of electrons

The number of electrons is the same as the atomic number of the element (calcium)

Number of neutrons = 41 - 20 = 21

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

grav forces affect all objects magnetic forces affect magnetic objects and electric currents