Hydrogen can hold only 1 electron.
Hydrogen has one electron. Its outer shell the first energy level has just one orbital, 1s which could hold a maximum of 2 electrons, so hydrogen only partially fills the level.
Its atomic number is 7, and so it needs a further 3 electrons to fill its outer shell.
Hydrogen and Helium both only need two valence electrons to fill their outer shell.
4 electrons are required to fill the outer shell of a carbon atom. This, the second shell of carbon, can contain two 2s electrons and six 2p electrons, but in a neutral carbon atom it actually contains only two 2s electrons and two 2p electrons. Therefore, four more electrons are required to fill the outer shell.
10 electrons
Two electrons will fill a hydrogen's outer, or valence, shell.
Not by itself, no (that is, hydrogen is not a noble gas). A neutral hydrogen atom starts out with 1 electron, but it needs 2 electrons to fill its shell. Therefore, a hydrogen atom will often form 1 covalent bond with another atom, in order to gain that 1 extra electron it needs to fill its shell. Important note: Most elements need 8 electrons to get a full shell, but hydrogen is the exception: it only needs 2 electrons to get a full shell.
Hydrogen has one electron. Its outer shell the first energy level has just one orbital, 1s which could hold a maximum of 2 electrons, so hydrogen only partially fills the level.
Carbon has four valence electrons, so it will need four more electrons to fill its outer shell.
There is only one electron inhabiting hydrogen and the compound therefore only has one shell, effectively making that shell the outer shell. TL;DR There is 1 electron in the outer shell of hydrogen.
Its atomic number is 7, and so it needs a further 3 electrons to fill its outer shell.
Hydrogen and Helium both only need two valence electrons to fill their outer shell.
Beryllium will lose 2 electrons to satisfy the octet rule (to fill its outer shell).
Yes. Two of the electrons will go into the carbon's outer s shell (2s) to completely fill it (s orbitals can contain up to two electrons) and the remaining two will go into its outer p shell (2p).
Carbon has four valence electrons, so it will need four more electrons to fill its outer shell.
4 to fill the 2p shell
4 to fill the 2p shell