Electric
current passes through a filament of an incandescent bulb, thereby increasing
it temperature. When current flows, it contains electrons through the filament
to produce light. Typically, incandescent light bulb consists
of a glass enclosure that contains tungsten filament. The glass enclosure
contains either a vacuum or an inert gas that serves as the filament protection
from evaporating. Incandescent light bulbs contain a stem attached at to its
base to allow the electrical contacts to run through the envelope without gas
or air leaks.
Answer : J. J. Thomson’s experiment disproved the theory that an atom is indivisible.
Explanation : Scientist J.J. Thomson did his experiment to prove the existence of electrons. He did the experiment using a cathode ray tube, in which a vacuum-sealed tube with a cathode and anode on one end was placed which created a beam of electrons that traveled towards the other end of the tube. This was the theory that proved that atoms consists of many subatomic particles namely electrons.
Answer:
D.
Explanation:
Im not quite sure if its correct or not
1s2 2s2 2p6 This equates to two electrons in the first energy level's s subshell, two electrons in the second energy level's s subshell, and six electrons in the second energy level's p subshell.
The fourth energy level, which includes the 4s orbital, would be the valence shell for the given electron configuration. In light of the 4s orbital's two electrons, it only contains two valence electrons. Al has a total of 13 electrons and is the element with the electron configuration 1s2 2s2 2p6 3s2 3p1. Metal group 13 includes Al. Heat and electricity are well-conducted by it.
To know more about electrons,
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