The valence shell of the element X contains 2 electrons in a 5s sub shell. Below that shell, element X has a partially filled 4d sub shell. What type of element is X?

Join BYJU'S Learning Program

The outermost shell of a representative element contains x electrons and penultimate shell contains y electrons. The number of valence electrons could be:

The correct option is B xThe outermost shell of a representative element contains x electrons and penultimate shell contains y electrons. The number of valence electrons could be x. The number of valence electrons is equal to the number of electrons in the outermost shell.

The outermost shell of a representative element contains $x$ electrons and penultimate shell contains $y$ electrons. The number of valence electrons could be:

The correct option is B $x$
The outermost shell of a representative element contains $x$ electrons and penultimate shell contains $y$ electrons. The number of valence electrons could be $x$ . The number of valence electrons is equal to the number of electrons in the outermost shell.