In the periodic table, there are seven horizontal rows of elements called periods.
Moles =mass/ molar mass of the bromine atom
the molar mass of bromine atom is 79.904g/mol
mass=2.60 x10^2
therefore the moles of bromine atom=
2.60 x10^2g/ 79.904g/mol =3.25gmoles(answer 4)
In the voltage-gated channels, the stimuli is a change in the voltage across the membrane.
In mechanically gated channels the stimuli is a mechanical stress.
In ligand-gated channels the stimuli is the binding of a ligand:ion or molecule that binds to a metal atom.
