Commutator (electric) A commutator is a moving part of a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit. It consists of a cylinder composed of multiple metal contact segments on the rotating armature of the machine.
The word equation that would represent the formation of lithium oxide from lithium metal and oxygen is: lithium + oxygen to lithium oxide. In chemical symbols, the balanced chemical equation is expressed as: Li + O2 = Li2O.
Lithium atomic orbital and chemical bonding information. ... Shell number one can only hold 2 electrons, shell two can hold 8, and for the first eighteen ... Two lithium (Li) atoms can bond with one oxygen (O) atom, making the formula Li2O. www.chem4kids.com Period 2 element - Wikipedia A period 2 element is one of the chemical elements in the second row (or period) of the periodic ... Period 2 elements obey the octet rule in that they need eight electrons to complete their valence shell. ... Lithium (Li) is an alkali metal with atomic number 3, occurring naturally in two isotopes: 6 Li and 7 Li.