how to find valency of calcium and chlorine (with steps)
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Hi. I am Rajdeep here
First observe the electronic configuration of not the elements, I.e., Calcium and chlorine.
Observe their positions in the periodic table.
You can see that the electronic configuration of Calcium is 2,8,8,2 and that of chlorine is 2,8,7. Now, always remember some things:
1) If in the valence shell, the number of valence electrons is <= 3, the atom is of a metal. The valency of a metal is the number of its valence electrons. Thus the valency of calcium is 2 since it has 2 valence electrons.
2. If in the valence shell, the number of electrons is > 3, the atom is of a non metal. To find the valency of a non metal, subtract the number of valence electrons from 8.
Thus, the valency of chlorine is 1, since it has 7 valence electrons, so 8 - 7 = 1.
Hope this helps you. Choose the brainliest answer from my one and Kunal's one.
First observe the electronic configuration of not the elements, I.e., Calcium and chlorine.
Observe their positions in the periodic table.
You can see that the electronic configuration of Calcium is 2,8,8,2 and that of chlorine is 2,8,7. Now, always remember some things:
1) If in the valence shell, the number of valence electrons is <= 3, the atom is of a metal. The valency of a metal is the number of its valence electrons. Thus the valency of calcium is 2 since it has 2 valence electrons.
2. If in the valence shell, the number of electrons is > 3, the atom is of a non metal. To find the valency of a non metal, subtract the number of valence electrons from 8.
Thus, the valency of chlorine is 1, since it has 7 valence electrons, so 8 - 7 = 1.
Hope this helps you. Choose the brainliest answer from my one and Kunal's one.
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Answer: Chlorine( Cl ) has 7 electrons in the outermost shell which is greater than 4, thus the valency of chlorine( Cl ) is 8 - 7 = 1 and Calcium is in group 2. The valency of a group 2 element is decided by the number of valence electrons and the number of valence electrons in calcium is 2 and therefore, the valency is 2.
Explanation:
First we will observe the electronic configuration of not the elements, I.e., Calcium and chlorine.
By observing their positions in the periodic table:
We can see that the electronic configuration of Calcium is 2,8,8,2 and that of chlorine is 2,8,7.
- An atom is classified as a metal if it has at least three valence electrons in the valence shell. The quantity of valence electrons in a metal determines its valency. Since calcium contains two valence electrons, it has a valency of 2.
- If there are more than three electrons in the valence shell, the atom is a non-metal. Subtract the number of valence electrons from 8 to determine the valency of a non-metal. Thus, the valency of chlorine is 1 as it has 7 valence electrons, so 8 - 7 = 1.
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