just a plain old "k"
A lower-case 'k'.
Kilo is an abbreviation for kilogram. Therefore, the correct plural of kilo is kilograms.
The symbol for kilogram is kg
k (kg,kL,km)
kcal is the symbol of kilo calories.
The correct symbol is Cl2 as gases al ways have 2 atoms.
correct
The correct symbol for carbon dioxide is CO2.
Symbol K(k) in science:K is potassium or Kelvin degree or dissociation constant or kilo, etc.
The correct order of prefixes beginning with kilo is kilo- (k), mega- (M), giga- (G), tera- (T), peta- (P). These prefixes are used to denote multiples of a unit of measurement.
The correct chemical symbol for ammonium perchlorate is NH4ClO4.
The correct spelling is kilometers. The prefix kilo- means 1000.