Electron Configuration Of Calcium 20. Calcium is a very ductile silvery metal (sometimes described as pale yellow) whose properties are very similar to the heavier elements in its group, strontium, barium, and radium.a calcium atom has twenty electrons, arranged in the electron configuration [ar]4s 2.like the other elements placed in group 2 of the periodic table, calcium has two valence electrons. Since we need to take away two electrons, we first remove electrons from the outermost shell (n=4).
In what period is calcium? There are 118 elements in the periodic table. ★★★ correct answer to the question:
Calcium atoms will lose two electrons in order to achieve the noble gas configuration of argon.
Look up the electronic configuration of that noble gas and include that value before the rest of the configuration. Calcium (ca) has an atomic number of 20. There are 118 elements in the periodic table. Hence, the electron configuration for ca 2+ is 1s 2 2s 2 2p 6 3s 2 3p 6.