An octet is 8 electrons- but even 2 electrons are okay for achieving stability.
A beryllium atom has 2 shells, with 2 electrons in each shell. Since it is a metal, it will lose electrons instead of gaining them, forming a positively charged ion.
This means that it will lose both the electrons in its outermost shell, leaving it with a single shell containing 2 electrons.
So, basically beryllium loses 2 to electrons to form a stable duet with a charge of 2+!
Hope this helped you (:
2 or more electrons, because Oxygen already has 8.
It is one of many, many exceptions to the octet rule. Hydrogen does NOT require 8 electrons.
This atom must gain 3 electrons to achieve an octet.
Eight
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.
Oxygen needs to gain 2 electrons to reach an octet, as it has 6 valence electrons in its outer shell and requires a total of 8 electrons to have a stable octet configuration.
2 or more electrons, because Oxygen already has 8.
8: that's the meaning of "octet".
8 valence electrons
Fluorine needs one more electron to have a stable octet, as it has 7 valence electrons and stable octet configuration is achieved with 8 electrons.
It is one of many, many exceptions to the octet rule. Hydrogen does NOT require 8 electrons.
Silicon, like carbon, has four valance electrons, and needs another four to have a stable octet.
The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons. By following this rule, you can determine the oxidation number of an element based on how many electrons it gains or loses in order to reach a full octet. The oxidation number corresponds to the charge an atom would have if the compound were ionic.
eight. it is important to obtain octet so that elements become stable.
An atom of oxygen needs to gain 2 electrons in order to complete its outermost energy level and achieve a stable octet configuration. Oxygen has 6 electrons in its outer shell and it can reach a total of 8 electrons, following the octet rule.
The octet rule is the tendency of many chemical elements to have eight electrons in the valence shell.
This atom must gain 3 electrons to achieve an octet.