Answer:
NH₃
Explanation:
The hydrogen bond is a specially strong type of dipole-dipole interaction. For a hydrogen bond to occur, a molecule must have a hydrogen atom and a very electronegative atom, such as nitrogen, oxygen or fluorine. The hydrogen atom has a positive charge density while the heteroatom has a negative charge density.
<em>Which of the following molecules can form hydrogen bonds? </em>
NH₃ YES
NaH NO
HI NO
BH₃ NO
CH₄ NO
Answer:
An Arrhenius Base
Explanation:
The definition of this is a base that is a hydroxide ion donor.
You should read up on Proust's law, better known as the Law of Definite Proportions. This is a chemical law that defines your question more generally, on why the ratio of elements and ions are always fixed.
Basically, this compound Magnesium(II) Chloride is MgCl2 because it has the same number of protons, neutrons, and electrons all the way. This defines the properties of the compound or atom.
Double replacement is happening
Gravitational pull coming from the sun
