Sodium (Na) has 11 electrons in its atom. Its electronic configuration is:

Q. What would be the electronic configuration of a positively charged sodium ion, $Na$? What would be its atomic number and mass number?

Q. Sodium atom with electronic configuration 2, 8, 1 achieves stable electronic configuration by -------- one electron from its outer shell.

Q. An atom has 2K,8L,5M electrons. Which of the following is its correct electronic configuration?

Q. An atom has electronic configuration $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{3}4s^2$. It will be place it in :

Q. Assertion :Octet rule is obeyed in the formation of sodium chloride. Reason: According to octet rule, the sodium atom which has only single electron in outermost shell , looses the electron to get a stable configuration like Ne gas, while the chlorine gas with 7 valence electrons gains an electron from the Na atom to obtain an stable configuration like Ar gas.