Valence Electrons (or Valency Electrons)

An atom of an element X may be written as  ${}_4{}^9\mathrm{X}$. How many electrons are there in the outermost shell of an atom of element $\mathrm{X}$? $\left(2 / 4\right)$

The atom of an element X has $7$electrons in its M shell. What could element X be?

The atom of an element X has $7$electrons in its M shell. What type of ion will be formed by an atom of element X ? Write the symbol of the ion formed.

The atom of an element X has $7$ electrons in its $\mathrm{M}$-shell. Is it a metal or non-metal?

What is the number of valence electrons in oxide ion, ${\mathrm{O}}^{2-}$?

What is the number of valence electrons in sodium ion, ${\mathrm{Na}}^{+}$?

The number of valence electrons in a sulphide ion, ${\mathrm{S}}^{2-}$, is:

The number of valence electrons in a graphite atom is:

What is the number of valence electrons in the atoms of an element having atomic number 13? Name the valence shell of this atom.

What are valence electrons? Where are valence electrons situated in an atom?

State the number of electrons present in the outermost shell of the atoms of the element chlorine. $\left(6/7/8\right)$

State the number of electrons present in the outermost shell of the atom of the element Neon. (Write answer in number(s))

What name is given to those isotopes which have unstable nuclei and emit various types of radiations? (Radioactive isotopes/ Non-radioactive isotopes)

The nucleus of an atom has $5$ protons and $6$ neutrons. What would be the the number of valence electrons per atom of this element?

Magnesium has $2$ valence electrons in the _____ shell. ($\mathrm{K}/\mathrm{L}/\mathrm{M}$)

The total number of electrons in a nitrogen atom is $7$. Find the number of valence electrons in it.