As you go down group 7 the melting point of the elements will increase, this is because as you go down the group you are gaining an electron shell and the molecule will become bigger. This increase in size means that there will be an increase in the intermolecular forces as well.
So the order would be NF3, NBr3, NI3.
Hopefully this helps!
No. on the left side you will notice there is one Ca, and 2 oxygen. therefore on the right side there must be 1 Ca, and 2 oxygen. The correct answer would be Ca + O2 -> CaO2
Answer:
Zinc carbonate. Zinc carbonate is a white, insoluble, zinc salt with chemical formula ZnCO3. With it, most simple zinc salts can be made by reaction with the corresponding proportions of sulfate. Zinc carbonate occurs in nature as the mineral Smithsonite aka zinc spar.
Explanation: