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.
Calcium has two valence electrons in its outer shell. To achieve a stable octet configuration of eight valence electrons, it needs to lose these two electrons rather than gain any. Therefore, calcium does not need to gain any electrons; instead, it will typically lose two to achieve stability.
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.
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.
Calcium has two valence electrons in its outer shell. To achieve a stable octet configuration of eight valence electrons, it needs to lose these two electrons rather than gain any. Therefore, calcium does not need to gain any electrons; instead, it will typically lose two to achieve stability.
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)