Answer:
NaF and KBr
Explanation:
These two substances contain pure ionic bonds. LiI is a covalent compound because of the Large polarizing power of Li and the high polarizability of I(Fajan's rules). The other compounds mentioned are organic compounds. They are not soluble in water at all.
Answer:
3 hydrogen bonds.
Explanation:
This is because the urea molecule has an oxygen atom bound with double bonds to the central carbon atom, and this oxygen can form a hydrogen bond with water, as well as both terminal amine groups that can also form a hydrogen bond each because of the lone pair of electrons on the nitrogen group.
Answer:
13 elements
Explanation:
those 13 elements involve Xenon,Radon,Chlorine,Hydrogen,Helium,Nitrogen,Krypton,Neon,Fluorine,Oxygen,Argon.Most of them are non-metals.
Answer:
<h2>4 1 2</h2>
Explanation:
4 Li(s) + 1 O2(g) -> 2 Li2O(s)
