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What element is stable with 2 valence electrons?

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∙ 7y ago

Updated: 6/22/2024

calcium

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Helium is stable with 2 valence electrons. It has a full outer electron shell, making it chemically inert and stable.

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Q: What element is stable with 2 valence electrons?

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Continue Learning about Earth Science

How many valance electrons does helium have?

Helium has two valence electrons. It is the only noble gas not to have eight valence electrons. Helium has the electronic configuration 1s2.The Noble gases have eight valence electrons in their outer shell.

Which element has a mass number of 40 and only has 2 valance electrons?

The element with a mass number of 40 and 2 valence electrons is calcium (Ca).

How does sulfur forms its ion?

Sulfur can form ions by gaining two electrons to attain a full outer electron shell, forming the sulfide ion (S^2-). This allows sulfur to achieve a stable electron configuration similar to that of a noble gas.

How do you know how many valence electrons does calcium have?

Calcium is in group 2 of the periodic table, so it has 2 valence electrons. Group number corresponds to the number of valence electrons in an element.

Give the charge of the most probable ion from the element Be?

The most probable ion of beryllium is Be^2+ because it loses its two valence electrons to achieve a stable electron configuration.

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Related Questions

What element has a stable 2 valence electrons?

The element with a stable 2 valence electrons is helium. Helium has a full outer electron shell with 2 electrons, making it very stable and unreactive.

How many valance electrons does helium have?

Helium has two valence electrons. It is the only noble gas not to have eight valence electrons. Helium has the electronic configuration 1s2.The Noble gases have eight valence electrons in their outer shell.

What is the number of valence electrons the element helium has?

Helium has 2 electrons (total of 2 electrons and 2 valence electrons)

How many valence electrons will make an element stable?

The number depends on what will fill the outer shell. It can be 2 or 8.

How many valence electron level does an element have?

Except for elements 1 and 2, all elements are stable with how many electrons in their outermost (valence) level?

How many valence electrons will make an element chemically stable?

The number depends on what will fill the outer shell. It can be 2 or 8.

What element has 2 valence electrons and 4 protons?

The element with 2 valence electrons and 4 protons is beryllium. Beryllium has an atomic number of 4, indicating it has 4 protons in its nucleus. The valence electrons are the outermost electrons in an atom, and beryllium has 2 valence electrons in its outer energy level.

How many valence electrons will make an element happy or stable?

Most elements are stable with a full outer shell of electrons, typically with 8 electrons known as the octet rule. However, elements in the first shell can be stable with 2 electrons. This full outer shell results in a stable configuration similar to the noble gases, making the element happy or stable.

What is valency of an element having atomic number 20?

H, Li, Na, K = 1valence electrons Be, Mg, Ca = 2 valence electrons B, Al = 3 valence electrons C, Si = 4 valence electrons N, P = 5 valence electrons O, S = 6 valence electrons F, Cl = 7 valence electrons He, Ne. Ar = 0 because they are noble gases and all their electron shells are full

How many valence in the element cobalt?

There are 2 valence electrons in cobalt.

How can you determine the number of valence electrons for an element on the periodic table?

To determine the number of valence electrons for an element on the periodic table, you look at the group number of the element. The group number tells you how many valence electrons the element has. For example, elements in group 1 have 1 valence electron, elements in group 2 have 2 valence electrons, and so on.

How do you determine the number of valence electrons for an element on the periodic table?

To determine the number of valence electrons for an element on the periodic table, you look at the group number of the element. The group number tells you how many valence electrons the element has. For example, elements in Group 1 have 1 valence electron, elements in Group 2 have 2 valence electrons, and so on.

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