Yes, selenium needs to gain 2 electrons to achieve an octet configuration because it has 6 valence electrons in its outer shell. By gaining 2 more electrons, selenium can reach a stable electron configuration with 8 electrons in its outermost shell.
Phosphorus need 3 electrons to complete its octet.
Oxygen should gain 2 electrons to achieve noble gas configuration
Selenium needs two more electrons.
The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell with 8 electrons, resembling the electron configuration of noble gases. For some elements such as hydrogen and helium, a full valence shell may consist of just 2 electrons.
These are the "noble gases." They are chemically inert, because they have a full octet of electrons in their valence energy level. Therefore, they do not need to lose or gain electrons to achieve stability; rather, they are naturally stable, which is why they do not react.
Selenium needs to gain two electrons to achieve a stable electron configuration. By gaining two electrons, selenium will have a complete outer energy level (valence shell), which is the most stable configuration for an atom.
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.
Silicon, like carbon, has four valance electrons, and needs another four to have a stable octet.
they need to either gain or lose electrons to create an octet. It depends on the atom. an octet is when an atom has a full outermost energy level
Phosphorus need 3 electrons to complete its octet.
Oxygen should gain 2 electrons to achieve noble gas configuration
It'll have to gain one to have a stable octet.
Selenium needs two more electrons.
Yes, neutral unbonded atoms can complete a valence octet by gaining or losing electrons to achieve a stable electron configuration with 8 valence electrons. This stability is known as the octet rule, which applies to many elements in the periodic table.
It would need to ionize, by combing with another fluoride atom.
They should gain 2 electrons to attain noble gas electronic configuration. (it doesn't become a noble gas as the number of protons are not same)
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.