if you mean how many are in it then there are 20
Calcium's electron configuration is [Ar] 4s2. To attain a noble gas configuration, calcium must lose 2 electrons to have the same electron configuration as argon, 4s2 3d10.
Calcium has two valence electrons, both of which are unpaired. •Ca•
The electron configuration for a calcium atom with atomic number 20 is 1s2 2s2 2p6 3s2 3p6 4s2. This can be represented using the noble gas shorthand notation as [Ar] 4s2, where [Ar] represents the electron configuration of argon.
The calcium ion formed when it achieves a noble-gas electron configuration is Ca2+, as it loses two electrons to have the same electron configuration as argon, a noble gas.
Calcium (Ca) has 20 electrons and its electron configuration is [Ar] 4s². To attain a noble gas electron configuration, calcium needs to lose two electrons to achieve the stable electron configuration of argon ([Ar] 4s² 3d¹⁰).
Because then it would be zinc!Calcium has the electron configuration [Ar] 4s2Zinc has the electron configuration [Ar] 3d10 4s2
Neutral calcium's electron configuration is 1s2 2s2 2p6 3s2 3p6 4s2. Ca2+ is the ion of calcium, which means that it has 2 less electrons than neutral calcium. Therefore, its electron configuration is 1s2 2s2 2p6 3s2 3p6.
The electron configuration for calcium is 1s2 2s2 2p6 3s2 3p6 4s2. Calcium has 20 electrons, so it fills the 4s subshell before the 3d subshell to achieve a more stable electron configuration.
Calcium's electron configuration is [Ar] 4s2. To attain a noble gas configuration, calcium must lose 2 electrons to have the same electron configuration as argon, 4s2 3d10.
Considering the normal calcium ion Ca2+ it has the same electronic configuration as the noble gas Argon.
Calcium has two valence electrons, both of which are unpaired. •Ca•
The electron configuration for a calcium atom with atomic number 20 is 1s2 2s2 2p6 3s2 3p6 4s2. This can be represented using the noble gas shorthand notation as [Ar] 4s2, where [Ar] represents the electron configuration of argon.
The electron configuration of calcium in its ground state is 1s2 2s2 2p6 3s2 3p6 4s2. In its excited state, one or more electrons transition to higher energy levels. For example, one possible excited state electron configuration for calcium could be 1s2 2s2 2p6 3s2 3p6 4s1 3d1.
The calcium ion formed when it achieves a noble-gas electron configuration is Ca2+, as it loses two electrons to have the same electron configuration as argon, a noble gas.
The electron configuration of calcium using noble gas notation is [Ar] 4s2. This notation indicates that calcium has the same electron configuration as argon ([Ar]) up to the 18th electron, and then adds two electrons to fill the 4s energy level.
Calcium (Ca) has 20 electrons and its electron configuration is [Ar] 4s². To attain a noble gas electron configuration, calcium needs to lose two electrons to achieve the stable electron configuration of argon ([Ar] 4s² 3d¹⁰).
The element calcium, or Ca, is located in group 2, period 4 of the periodic table. Therefore, its electron configuration is 1s2 2s2 2p6 3s2 3p6 4s2. This can also be written as [Ar] 4s2, because the beginning of that electron configuration is the same as argon's. The 42 you mentioned in your question is referring to a specific isotope of calcium and has nothing to with the electron configuration.