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 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.
Symbol K(k) in science:K is potassium or Kelvin degree or dissociation constant or kilo, etc.
The correct symbol for carbon dioxide is CO2.
The correct chemical symbol for ammonium perchlorate is NH4ClO4.
The correct spelling is kilometers. The prefix kilo- means 1000.