3 ¿Cuál de las siguientes es una sustancia molecular?
Select one:
O N₂
O Hg2Cl2
Sro
O Mg3N2

its going to be mutualism cuz they both benefit from the relationship.

~batmans wife dun dun

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.  

window cleaner is ammonia dissolved in water. this is an example of a