what is the valency of an element in terms of its valence electrons
Answers
Answer:
Explanation:
the valence or valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules. ... For example, oxygen has six valence electrons, but its valency is 2
Answer:
the valence or valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules. ... For example, oxygen has six valence electrons, but its valency is 2.Valency is the combining power of an element. Elements in the same group of the periodic table have the same valency. The valency of an element is related to how many electrons are in the outer shell. ... V - beneath each symbol, write it's valency.
Valence electrons → Total number of electrons in outermost shell (also called as valence shell) is called as valence electrons.
Valency → The number of electrons an element can donate or gain or share in order to complete its outermost shell is call as valency.
Ex → Consider Aluminium. Its electronic configuration is Al=2,8,3. As last shell has 3 electrons it will donate them to complete its octate(i.e. outermost shell) hence it's valency is 3. As last shell has 3 electrons it has 3 valence electrons. Now consider Chlorine with electronic configuration Cl=2,8,7 here it will gain 1 electron to complete octate hence having valency 1 and as it has 7 electrons in outermost shell it has 7 valence electrons.