Because that is how the universe was made. The law of charges states that opposite charges attract.
Negative will be attracted to positive.
magnetism
magnetism
a positive ion is attracted to a negative ion.
A positive ion is attracted to a negative ion.
Ionic Bond
If a positive ion is attracted to a negative ion, they will come together and form an ionic bond. This bond is formed by the electrostatic attraction between the oppositely charged ions. This bond is typically strong and stable.
Surrounds the ions with the hydrogen, positive end, attracted to the negative ion ( Cl -, for instance ) and the oxygen, negative end, attracted to the positive ion ( Na +, for instance ).
When a sodium ion is attracted to a chloride ion, they form an ionic bond due to their opposite charges. The positive sodium ion is attracted to the negative chloride ion, leading to the formation of solid sodium chloride, which is commonly known as table salt.
Ion-dipole attraction dictates that the negative pole of a water molecule will be attracted to the sodium cation and the positive pole of a water molecule will be attracted to the chloride anion.
Na is positive ion,Cl is negative ion
An iron ion and a sulfide ion have positive and negative charges respectively, and they attract each other. But having positive charges in both, iron ions do not attract with zinc ions.