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.
8 valence electrons. It originally has 20 electrons (inclusion of 2 valence electrons). the ion form of calcium will lose the two electrons, thus losing the outermost valence shell. the next shell will contain the full 8 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.
Calcium has two valence electrons.
2
Calcium has valence of 2, forming the calcium ion Ca2+. The phosphate ion, PO43- contains five valent phosphorus and divalent oxygen along with three extra electrons. Compounds do not have a valence, atoms have a valence.
None.Calcium loses 2 electrons to form an ion.
Hydrogen has 1 valence electron, phosphorus has 5 valence electrons, and oxygen has 6 valence electrons. So, if you totaled all of the valence electrons in the ion HPO42- you'd get 1 + 5 + 6 X 4 + 2 = 32. However, you should realize that the term "valence electron" really only applies to individual atoms, not compounds. The only electrons one would concern themselves with in the HPO42- ion are the 2 that make it an ion.
32
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
The calcium atom (Ca) loses two valence electrons to form a calcium ion (Ca2+).
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 has valence of 2, forming the calcium ion Ca2+. The phosphate ion, PO43- contains five valent phosphorus and divalent oxygen along with three extra electrons. Compounds do not have a valence, atoms have a valence.
There are 7 valence electrons in chlorine atom and 8 valence electrons in chloride ion.
A chloride ion has 18 electrons, giving it a valence of -1.
Iodine atom has 7 valence electrons, whereas Iodide ion has 8 valence electrons.
Three electrons
Chlorine has 7 valence electrons. A chloride ion has 8.
Calcium loses its two valence electrons to become Ca 2+ ion.
A magnesium atom has 2 electrons in its valence shell. A magnesium ion has 8 electrons in its valence shell.
Phosphorus forms P3- ion and it has 8 valence electrons (5 valence electrons from phosphorus and three from the charge).
8