The element having 18 electrons in its outer most shell is:

Three elements having 7 electrons in their outermost shell

Three elements having 7 electrons in their outermost shell

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

Two elements having a single electron in their outermost shell

The most common oxidation state of an element is -2. The number of electrons present in its outer most shell is:

An element X has 3 electrons in the outer most shell of the atom. Write the formula of its oxide.

An element X has 3 electrons in the outer most shell of the atom. Write the symbol of its ion.

An element X has 3 electrons in the outer most shell of the atom. State whether X is a metal or a non-metal.

.An element Y belong to \(3^{rd}\) period of the P-block elements.it has "4" electrons in the outer most shell. Name the element.