In the ground state, an element has 13 electrons in its M-shell. The element is-

In the ground state, an element has 13 electrons in M shell.The element is

An element has 18 electrons in the outer most shell. The element is

Element X has two electrons in its M shell. Identify the element.

An element has one electron in the 'M' shell. Identify the element.

An element has 8 electrons in the valence shell

Element "X" has two electrons in its "M" shell.Identify the element.

An atom of an element X has 2 electrons in its N shell. Where is this element placed in the periodic table ?