
The atomic number for potassium is
19.The element symbol is k. The element
atomic mass is 39.0983.
Lime and oranges have
potassium.

Potassium is an essential dietary mineral
and electrolyte. The term electrolyte
refers to a substance that dissociates into
ions (charged particles) in solution,
making it capable of conducting
electricity. Normal body function
depends on tight regulation of potassium
concentrations both inside and outside
of cells (1).

Potassium is the principal positively charged ion (cation) in the
fluid inside of cells, while sodium is the principal cation in the fluid
outside of cells. Potassium concentrations are about 30 times
higher inside than outside cells, while sodium concentrations are
more than ten times lower inside than outside cells. The
concentration differences between potassium and sodium
across cell membranes create an electrochemical gradient
known as the membrane potential. A cell's membrane potential
is maintained by ion pumps in the cell membrane, especially the
sodium, potassium-ATPase pumps. These pumps use ATP
(energy) to pump sodium out of the cell in exchange for
potassium (diagram). Their activity has been estimated to
account for 20%-40% of the resting energy expenditure in a
typical adult. The large proportion of energy dedicated to
maintaining sodium/potassium concentration gradients
emphasizes the importance of this function in sustaining life. Tight
control of cell membrane potential is critical for nerve impulse
transmission, muscle contraction, and heart function (2, 3).

A banana has potassium in it and it
contains protein .Banana length
between 3-9 centimeters.

My hero is a grape he saved his friend
grapeshia from his enemy the peanut.
My grape has potassium and a atomic
number 19.