Easily put, an electron is a subatomic particle that carries a negative electric charge. There are no known components, so it is believed to be an elementary particle(basic building block of the universe). The mass of an electron is 1/1836 of its proton. Electrons have an antiparticle called a positron.
Double Oven Average Costs . Double ovens start at around $1,250 to $2,500 and can cost as much as $4,000 to $5,000 or more. Professional installation of a double oven might cost $100 to $200 (or more, if cabinet alteration is required). To make installation as easy as possible, look for a double oven that's the same size as your old oven.
1 On average, a toaster oven can cost anywhere from as little as $30 to as much as $250. 2  Amazon, for example, has hundreds of toaster ovens for sale.3  The Breville BOV800XL Smart Oven 1800-Watt Convection Toaster Oven with Element IQ retails for $250, for example. Decide on how much you are willing to spend. 2  Toaster ovens are generally more expensive than toasters because they are bigger and can do more. 3  If you want to economize, you will find top-performing toasters for as little as $15. 4  Low-priced toaster ovens that did well in our tests will cost about $70 to $80.