Which of the following diatomic molecules is joined by a triple covalent bond? o2 cl2 n2 he2

N2 has the triple covalent bond.

You can view the diagram for the distribution of electors in the bond.

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.

Naoh + hbr -> nabr (salt) + h2o ca (oh)2 + 2hbr - - - > ca (br)2 + 2h2o