There are no unpaired electrons in calcium, all 20 electrons are in pairs, i.e. each pair is configured in one orbital:
2x in 1s orbital
2x in 2s orbital
2x in each of the three 2p orbitals
2x in 3s orbital
2x in each of the three 3p orbitals
and
2x in 4s orbital (these two are the valence electrons)
There are no unpaired electrons in calcium. There are two electrons in the 4s sublevel. Calcium will lose those two electrons in order to form ionic compounds with nonmetals like oxygen and chlorine.
How many paired electrons in calcium
2
There are 3 unpaired electrons.
zero - there are no unpaired electrons
three unpaired electrons
6 unpaired electrons
There are many elements which have no unpaired electrons in their outer shells. The Noble gasses all have closed shells of valence electrons. The alkali earth metals (Beryllium, Magnesium, Calcium etc) also have no unpaired electrons, although their outer shell is not entirely full.
There are 3 unpaired electrons.
zero - there are no unpaired electrons
three unpaired electrons
There are no unpaired electrons in strontium.
6 unpaired electrons
My book says that calcium is paramagnetic but I cannot understand why since it doesn't have any unpaired electrons as paramagnetic materials need to have. I have the same question for magnesium too.
There are many elements which have no unpaired electrons in their outer shells. The Noble gasses all have closed shells of valence electrons. The alkali earth metals (Beryllium, Magnesium, Calcium etc) also have no unpaired electrons, although their outer shell is not entirely full.
Calcium has two valence electrons, both of which are unpaired. •Ca•
A silicon atom has 4 unpaired electrons.
3 unpaired electrons
they're are zero unpaired electrons.
5 unpaired electrons There are 5 unpaired electrons in the Fe3+ ion. The reason for this is that Iron has the electron configuration Ar3d5.