all matter has both physical and chemical properties. a physical property can be observed without changing the identity of the substance. which of these choices is a physical property?

Which atom or ion is the largest? 0 a. 0 0 0 0 e. li

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

How many lone pairs of electrons are on the central atom of no3- and what is the molecular shape? one, trigonal planar zero, trigonal pyramidal zero, trigonal planar one, tetrahedral one, trigonal pyramidal