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The only generally accepted metalloid that has three electrons in its outermost shell is Boron - symbol B - electronic structure 1s22s22p1 .

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Q: What metalloid has three electrons in its outermost shell?
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When elements gain three electrons to fill its valence energy level?

When these elements have five electrons on the outermost shell of electrons.


What is the number of electrons found in the outermost electron shell in aluminum?

Normally, three.


Why does nitrogen have a lone pair of electrons?

in nitrogen there is five electrons in outermost shell,three electrons are in single form so they can make bond,while other two electrons act as lone pair


How many electrons are in energy level 3 of argon?

it has eight electrons in its outermost shell, which is one of the qualifications of the first three noble gases. The highest energy level refers to the atoms outer shell of electrons


What metalloid has three valence electrons?

I'm pretty sure it's germanium


How many electrons does sodium have in its outer most shell?

Sodium is in the third group in the periodic table. It meens that sodium has three shell. First shell - 2 electrons, second shell - 8 electrons, third shell (outer energy level) - 1 electron.


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Three (3) electrons in this energy level.


How many electrons dose boron have in its outer shell?

Boron has three electrons in its outer shell


How with 5 valence electrons will achieve a full set of valence electrons?

If you're asking how will an atom with 5 valence electrons will achieve a full set of valence electrons, then the answer would be that they bond with other atoms to gain a full set of the valence electrons by sharing or gaining 3 electrons.


How many electrons are found in the outermost shell of alumimum Al atomic number 13?

The atomic number of any element depends on the number of protons it has in its nucleus. Aluminium has 13 protons hence making the atomic number of aluminum 13.


Does calcium have three electrons in its valence shell yes or no?

No. It has Two electron in its valance shell.


Why do some atoms gain electrons while other atoms lose electrons during ionic bonding?

The most stable electron configuration for any atom is to have a complete outer shell. For the smallest atoms, that can be no electrons at all (for H+) since no shell is equivalent to a complete shell, or just two electrons in the outer shell, such as for a helium atom, but for most elements that means 8 electrons in the outer shell. We then have atoms which have five or more electrons in their outer shell and therefore need three or less to complete their shell, and they tend to gain electrons because it is easier to gain three than it is to lose five. Similarly, there are atoms with three or fewer electrons in their outer shell, and they tend to lose electrons because it is easier to lose three than it is to gain five. In the middle we have an atom such as carbon, with four electrons it its outer shell; it can gain or lose electrons with equal ease.