Calcium loses 2 valence electron to become ionized.
It loses 2 electrons to obtain the argon configuration of 8 valence electrons.
Calcium is a non metal element. There are 20 electrons in a single atom.
Depends on what you mean by number of electrons. Calcium has 20 electrons and oxygen has 8 electrons for a total of 28 electrons. But if you mean how many VALENCE electrons, then the calcium has 2 and the O has 6 for a total of 8 valence electrons.
Calcium loses two electrons to obtain a noble-gas electron configuration.
Calcium oxide (CaO) consists of calcium (Ca) and oxygen (O). Calcium, a group 2 element, has 2 valence electrons, while oxygen, a group 16 element, has 6 valence electrons. Therefore, in total, CaO has 2 (from Ca) + 6 (from O) = 8 valence electrons.
It loses 2 electrons to obtain the argon configuration of 8 valence electrons.
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 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 carbonate has 16 valence electrons. Calcium contributes 2 valence electrons, while each oxygen atom contributes 6 valence electrons.
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.
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.
2 electrons as it has 2 valence electrons, hence it has a tendency to lose 2 electrons to achieve noble gas configuration
Silicon has 4 Calcium has 2 Chlorine has 7 Sodium has 1