2
Gold has 25 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.
its in column two on the periodic table, so therefor it has two valence electrons .
Calcium atoms have 8 electrons in the second energy level. However, they are not the valence electrons. The outermost electrons in a calcium atom in the ground state are 2 4s electrons. So calcium atoms in the ground state have 2 valence electrons in the fourth energy level.
two
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 has 2 electrons in its outer valence shell. It belongs to Group 2 of the periodic table, so it has 2 valence electrons.
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.
Calcium has 2 valence electrons and it typically loses these 2 electrons to achieve a stable configuration.
Silicon has 4 valence electrons, calcium has 2 valence electrons, chlorine has 7 valence electrons, and sodium has 1 valence electron.
Two.
Calcium's atomic number is 20. It therefore has 20 protons and 20 electrons. Since calcium is a group 2 element, 2 of those electrons are valence electrons.
2
Gold has 25 valence electrons