Which of the following represents a compound?

h2o
o-16
h-3
h

The symbol that corresponds to a compound is:

Explanation:

When speaking of a compound, it must be taken into account that it is the combination of two or more totally different elements, so, although in some options numbers such as 3 or 16 are shown, you must recognize that they are several valences of the same element, therefore the only formula that corresponds to a compound is H20 water, which includes hydrogen and oxygen.

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

these nuts