urgent chloride, giving reasons
Valette is also the number of electrons - donated or accepted by an atom so as to achieve
stable electronic configuration of the nearest noble gas'. With reference to this definition -
al State what is meant by 'stable electronic configuration'.
bl State why the valency of -
il sodium, magnesium & aluminium is: +1, +2 & +3 respectively.
ii) chlorine, oxygen & nitrogen is: -1, -2 & -3 respectively.
Answers
Answer:
a) Stable electronic configuration means the atom completes its octet(i.e. 8 electrons in the outermost shell) and becomes stable. The configuration becomes same as the nearest noble gas.
b) i) The valency of Sodium is +1 because it has 1 electron in its outermost shell which, when donated, makes the Sodium atom stable.
Similarly, Magnesium atom has 2 valence electrons. So its valency becomes +2 because after donating these 2 electrons, Magnesium atom becomes stable.
Similarly, Aluminium atom has 3 valence electrons. So its valency becomes +3 because after donating these 3 electrons, Aluminium atom becomes stable.
ii) Chlorine has 7 valence electrons. Donating 7 electrons is practically not possible, so to attain stable configuration, Chlorine accepts 1 electron and completes its octet. Thus, valency of Chlorine becomes -1.
Similarly, Oxygen has 6 valence electrons. Instead of donating them, it accepts 2 more electrons to complete its octet. Thus its valency is -2.
Similarly, Nitrogen has 5 valence electrons. Instead of donating them, it accepts 3 more electrons to complete its octet. Thus its valency is -3.
I hope my answer helps you. :)
Answer:
please give proper question i am sorry