A carbon atom typically possesses six electrons – two in its inner shell and four in its outer shell. This number varies due to a number of circumstances, but a stand-alone atom with no charge contains six electrons.
One neutral atom of carbon has four valence electrons. An easy way to tell how many valence electrons an element has is to look at the periodic table and find the element's main group number. Carbon is in group 4, which means it has four valence electrons.
A carbon atom has four valence electrons. The number of valence electrons of any atom of an element can be determined by the period table group in which the element is classified. There are a total of 18 groups on the period table group.
Gold normally has 79 electrons. Unless it has been ionized, the number of electrons in an atom is the same as its number of protons. This is expressed as the element's atomic number, which, for gold, is 79.
In its ground, or lowest-energy, state, carbon has two unpaired electrons. However, there are four total outer, or valence, electrons, meaning carbon atoms have four possible bonding sites.
A neutral silver atom has 47 electrons. The atomic number of silver is 47, meaning that there are 47 protons and 47 electrons in a neutral atom of silver. It most commonly has 61 neutrons.
Calcium has 20 electrons and 20 neutrons. Calcium, obtainable from items like limestone, chalk and marble, was first discovered in 1808 by Sir Humphrey Davy.