Which of the following cannot exist as individual atoms and they pairs as a molecule?
a) Fluorine
b) Chlorine
c) Bromine
d) all of these
Which of the following cannot exist as individual atoms and they pairs as a molecule?
a) Iodine
b) Astatine
c) Neon
d) both a and b
Which of the following exist/s as single atom?
a) Helium
b) Neon
c) Argon
d) all of these
Which of the following molecules has 3 atoms?
a) ozone molecule
b) sulphur molecule
c) hydrogen molecule
d) oxygen molecule
Which of the following molecules has 8 atoms?
a) ozone molecule
b) sulphur molecule
c) hydrogen molecule
d) oxygen molecule
Compound:
A compound is a substance made up of two or more different chemical elements combined in a fixed ratio.
