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Calcium has 2, 8, 8, and 2 electrons in its shells. The particulars are here: http://en.wikipedia.org/wiki/Calcium

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17y ago
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13y ago

Calcium, or Ca, is an alkaline earth metal. It's electron configuration is [Ar] 4s2. That means that it has two electrons in its valence shell.

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Q: What is the number of electrons in the outer shell of Ca?
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Related questions

How many electrons does He and Ca have in its outer shell?

Helium (He) and Calcium (Ca) both have 2 valence electrons.


Number of valence electrons calcium lose?

Calcium has 2 valence electrons in its outer shell. To achieve a full outer shell, it will lose these 2 electrons, becoming a Ca^2+ ion.


How many electrons are in the outer shell of yhe Ca and He atoms?

Ca has 2 electrons in its outermost shell its configuration being 2, 8,8,2 or 1s2, 2s2, 2p6, 3s2 3p6, 4s2 (4s2 fills before 3d becuase of the aufbau principle) He has also got two electrons these fill the first energy level resulting in a stable arrangement. 1s2


How many electrons are in the outer shell of the Ca and He atom?

Calcium (Ca) has 2 electrons in its outer shell, following the octet rule. Helium (He) has 2 electrons in its only shell, making it a stable, closed-shell element.


How many electrons gained or lost for calcium?

Calcium typically loses 2 electrons to form a stable ion with a 2+ charge. This is because calcium has 2 electrons in its outer shell, and it is energetically favorable for it to lose these electrons to achieve a full outer shell configuration.


Which element has the same number of electrons available for bonding as magnesium?

Calcium has the same number of electrons available for bonding as magnesium. Both elements have 2 electrons available for bonding in the outer shell.


Is the outer electron configuration of the Ca atom before the reaction is very stable one?

Yes, the outer electron configuration of Ca before the reaction (2,8,8,2) is stable due to having a full outermost shell. This stability is a result of the octet rule, which states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of electrons.


What is the oxidation number of calcium in a compound?

The oxidation number of calcium is typically +2 in compounds. This is because calcium tends to lose two electrons from its outer shell to achieve a stable electron configuration.


What is the Lewis dot structure for calcium?

Cl-Cr-Cl


How many electrons are found in an atom of Ca?

6 electrons in Ca are core electrons: 1s2,2s2,2p6,3s2,3p6,4s2 For every complete orbital, there is a core electron. There are a total of 18 core electrons in Ca. Also, there are 2 valence electrons in Ca. The valence electrons are the electrons that are in the outmost most shell, which will be the fourth shell.


What does not have a noble gas configuration Na Rb O2 Br Ca Al3 S2?

Na, Rb, Al3+, and S2- do not have a noble gas configuration as they do not have the complete outer shell of electrons like a noble gas. O2, Br, Ca, and O2- have noble gas configurations as they either have a complete outer shell of electrons or have gained/lost electrons to achieve a stable noble gas configuration.


Calcium Sulfide formula?

CaS Because Calcium has 2 electrons in its outer shell- so it needs to get rid of those (Ca2+) Sulfur has 6 electrons in its outer shell- so it needs 2 more to have a full outer shell (S2-)