K - Potassium - periodic table of the elements

In 1807, Humphrey Davy electrolyzed "fused potash" (KOH) to form pure potassium at the cathode. Potassium, also known as kalium, is a soft alkali metal and one of the most active metals known. Potassium is essential to the human diet.

Atomic number	-	19		Density	g/mL	0	.86
Atomic weight	u	39	.0983	Melting point	K	336	.35
Bonding radius	A	2	.03	Boiling point	K	1032
Atomic radius	A	2	.77	Heat of vaporization	kJ/mol	79	.87
Ionization Potential	V	4	.341	Heat of fusion	kJ/mol	2	.334
Electronegativity	-	0	.82	Specific heat	J/gK	0	.75
The oxide is a strong base.				Crystal are body centered cubic.
Electron configuration: [Ar] 4s¹

Other elements of the periodic table

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

H He

Li Be B C N O F Ne

Na Mg Al Si P S Cl Ar

K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr

Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe

Cs Ba La * Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn

Fr Ra Ac ** Rf Db Sg Bh Hs Mt 110 111 112 113

Lanthanides* Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu

Actinides ** Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr