1s2, 2s2, 2p6, 3s1.
It the the '3s1' electron that readily ionises m because it is in the outer most electron energy shell.
The ion formed when sodium achieves a noble-gas electronic configuration is Na+. This means that sodium has lost one electron to achieve the same electron configuration as neon, a noble gas, which has a stable electron configuration.
Sodium is atomic number 11 so it has 11 electrons. The electronic configuration would be 1s2 2s2 2p6 3s1.
na + cl- na - electronic configuration 2,8,1 cl - electronic configuration 2,8,7 na -e --> na + cl +e -->cl - so they formed a ironic bond between them
The electronic configuration for the sodium ion, Na+ is 1s2 2s2 2p6 or [Ne]
Argon has the same electron configuration as a sodium ion. Sodium ion has lost 1 electron from its outer shell, making its electronic configuration 2, 8. Argon's electronic configuration is also 2, 8 in its outer shell.
Both lithium (Li) and sodium (Na) have one electron in their outermost energy level, giving them similar electronic configurations. They both have an electron configuration of [Ne] 3s¹, where [Ne] represents the electron configuration of the noble gas neon.
2,8,1
Sodium looses one electron to achieve noble gas electronic configuration.The formula of ion formed is Na+
Na+ is the formula of the ion formed when sodium achieves a stable electron configuration.
Electronic configuration means the arrangement of electrons in shells in atoms. Eg:Electronic configuration of Sodium is 1s2,2s2,2p6,3s1.
The most likely electron configuration for a sodium ion (Na+) in its ground state is 1s2 2s2 2p6. This configuration represents the electronic structure of a sodium atom that has lost one electron to become a sodium ion, achieving a stable octet configuration similar to that of a noble gas.
If it has 11 electrons it must have 11 protons to balance the charge. So the element is Na. But you know it's going to be an isotope of Na since the number of protons and number of neutrons are different. To find out which isotope you have, you must get the mass number which is just the number of protons plus the number of neutrons (remember, they are the only ones that have mass) 11+12= 23 So you have Na-23