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.Know More
Valence electrons are the electrons found in an atom's outer electron shell. A neutral carbon atom has a total of six electrons, but not all six electrons are located in the same energy level. Two of them are located in the first shell, while the remaining four are located in the second shell. The four electrons in the second shell are the valence electrons.
Valence electrons are important because they help determine if an element is able to participate in a chemical reaction.Learn more about Atoms & Molecules
Nickel has eight electrons in the 3d orbital and two electrons in the 4s orbital, which means nickel has 10 total valence electrons. The reason it has 10 is because nickel is a transition metal, so the d and s electrons can participate in chemical bonding.Full Answer >
Helium has two valence electrons. As an element, helium is very stable and contains a single s-orbital on its outer shell.Full Answer >
The element copper has 11 valence electrons, distributed amongst the outermost d and s orbitals. These electrons are the ones that engage in chemical reactions that involve photons corresponding to visible light. The inner electrons require far higher energies to liberate, and do not figure in chemical reactions.Full Answer >
The element manganese has seven valence electrons. The electronic configuration of manganese is [Ar] 3d5 4s2. The atomic number of manganese is 25 and it has 25 electrons out of which seven electrons are in the last shell or orbit.Full Answer >