Write the electronic configuration of the Na +, Mg2 +, Ca2 + and Rb + ions. Research the size of these ions in picometers and order them in descending order of their size.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it

Which substance has non polar covalent bonds