the valence of CaCl2 is 2 because its not necessary that CaCl2 is always attached in hydrated form...... the basic thing which u study in your school classes that the outermost shell of both the element must be completed. so cacl2 has the valency of 2 because ca is electropositive. think it
Calcium carbonate has 16 valence electrons. Calcium contributes 2 valence electrons, while each oxygen atom contributes 6 valence electrons.
Since fluorine and chlorine are in family 7A, they each have 7 valence electrons. The number of the family corresponds to the number of valence electrons.
Boron has 3 valence electrons, gold has 1 valence electron, krypton has 8 valence electrons, and calcium has 2 valence electrons. Valence electrons are the electrons in the outermost energy level of an atom.
Type your answer here... The number of valence electrons in calcium is 20, because it's almost the same thing as it's atomic number.
its in column two on the periodic table, so therefor it has two valence electrons .
Silicon has 4 Calcium has 2 Chlorine has 7 Sodium has 1
The element chlorine has seven electrons in its valence shell.
Calcium has two valence electrons.
Chlorine has 7 valence electrons.
Calcium is a non metal element. There are 20 electrons in a single atom.
Calcium has 2 valence electrons, like all Group 2 elements.
Calcium has two valence electrons.
In every chlorine atom, there are seven valence electrons.
Calcium carbonate has 16 valence electrons. Calcium contributes 2 valence electrons, while each oxygen atom contributes 6 valence electrons.
chlorine has 7 valence electrons.
An atom of chlorine has 7 valence electrons because it is in group 17 of the periodic table.
Since fluorine and chlorine are in family 7A, they each have 7 valence electrons. The number of the family corresponds to the number of valence electrons.