Oxygen needs 2 electrons to fill it's valence shell which is why it forms a 2- ion.
Oxygen needs 2 electrons to fill its outer shell, which is the second electron shell. This shell can hold a maximum of 8 electrons. Oxygen has 6 electrons in its neutral state, so it will gain 2 electrons to achieve a stable electron configuration similar to a noble gas.
Oxygen has two electron shells because it has eight electrons in total, with two in the first shell and six in the second shell. Atoms tend to fill their outermost electron shell to achieve stability, and oxygen does this by sharing electrons with other atoms or gaining electrons to fill its outer shell.
They all have 6 in its outer shell because they are all in the same group in the periodic table. Your VERY VERY welcome (:
Its atomic number is 7, and so it needs a further 3 electrons to fill its outer shell.
An atom of nitrogen has 5 electrons in its outer shell. This makes nitrogen a nonmetal and means it requires 3 more electrons to fill its outer shell and become stable.
Oxygen tends to gain two electrons to fill its outer shell, resulting in a deficiency of electrons.
Oxygen needs 2 electrons to fill its outer shell, which is the second electron shell. This shell can hold a maximum of 8 electrons. Oxygen has 6 electrons in its neutral state, so it will gain 2 electrons to achieve a stable electron configuration similar to a noble gas.
Sulfur has 6 electrons in its outer shell. Therefore, it needs 2 more electrons to fill its outer shell.
Oxygen has two electron shells because it has eight electrons in total, with two in the first shell and six in the second shell. Atoms tend to fill their outermost electron shell to achieve stability, and oxygen does this by sharing electrons with other atoms or gaining electrons to fill its outer shell.
Carbon has four valence electrons, so it will need four more electrons to fill its outer shell.
They all have 6 in its outer shell because they are all in the same group in the periodic table. Your VERY VERY welcome (:
Carbon has four valence electrons, so it will need four more electrons to fill its outer shell.
Nitrogen needs 3 more electrons to fill its outer shell. It has 5 electrons in its outer shell, and it typically needs a total of 8 electrons to achieve a full outer shell (octet rule).
Carbon needs 4 electrons to fill up its outer shell. It has 4 valence electrons and can achieve a full octet by gaining 4 more electrons.
Beryllium will lose 2 electrons to satisfy the octet rule (to fill its outer shell).
Its atomic number is 7, and so it needs a further 3 electrons to fill its outer shell.
4 to fill the 2p shell