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8
2 or more electrons, because Oxygen already has 8.
by sharing its electrons
By bonding with another atom, either ionically (donates/receives electrons) or covalently (electron sharing).
An octet of electrons is when the outermost electron shell of an atom contains eight electrons.
8
2 or more electrons, because Oxygen already has 8.
it forms covalent bonds by sharing electrons
by sharing its electrons
covalent - which means "sharing of valence electrons"
By bonding with another atom, either ionically (donates/receives electrons) or covalently (electron sharing).
Atoms are not sentient. They undergo chemical bonding and chemical reactions in order to have lower energy, which makes them stable. Typically this means either sharing electrons to get an octet of electrons, or transferring electrons so they get an octet of electrons. This is not a conscious decision on their part.
When sodium becomes an ion, it loses one electron to fulfill the octet rule. A neutral sodium ion has 11 electrons, so an ion will have 10.
An octet of electrons is when the outermost electron shell of an atom contains eight electrons.
look for it on the chemistry book, and don't be lazy!Covalent bonding is all about "sharing electrons" so the two elements share electrons (which forms a covalent bond) in order to complete or help complete their octet.
Since carbon has 4 valance electrons, if it shares all 4, it then has a full outer shell of 8 electrons, which is a stable configuration, in accordance with the octet rule.
Water is a molecule made of three atoms (one oxygen and two hydrogen) and the concept of the electron octet applies to atoms, not to molecules. Oxygen, with six valance electrons, can acquire an octet by sharing the electrons of two hydrogen atoms, each of which have one electron. So the water molecule is self contained, it does not need any more electrons.