its in column two on the Periodic Table, so therefor it has two valence electrons .
Calcium carbonate has 16 valence electrons. Calcium contributes 2 valence electrons, while each oxygen atom contributes 6 valence electrons.
What kind of question is that lol I don't even know that and I just studyed that last semester lol
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.
Calcium would need to lose 2 electrons to have 8 valence electrons. This is because calcium has 2 valence electrons in its outer shell, and by losing these 2 electrons, it can achieve a stable octet configuration like the noble gas argon.
Calcium has two 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.
Calcium carbonate has 16 valence electrons. Calcium contributes 2 valence electrons, while each oxygen atom contributes 6 valence electrons.
There are 2 electrons in valence shell of calcium. :-)
Calcium has 2 valence electrons. It is in group 2 of the periodic table, which means it has 2 electrons in its outermost energy level.
What kind of question is that lol I don't even know that and I just studyed that last semester lol
Calcium loses 2 valence electron to become ionized.
Silicon has 4 Calcium has 2 Chlorine has 7 Sodium has 1
Two.
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.