The nucleus of an atom can have either a positive or negative charge

The statement is false. The nucleus of an atom can only have a positive charge. The nucleus is made up of protons and neutrons. Protons are positively charged particles while the neutrons do not have a charge. Therefore, the nucleus is positively charged.

Ifound this on google “these two compounds have a different ionic structure. caesium ion is larger in size when compared to the sodium ion. the charge gets more area to spread out evenly. so caesium chloride has a lower melting point than sodium chloride.” i hope this you for what your looking for