0
How many electrons does Magnesium need to complete the last shell?
Wiki User
∙ 11y ago
A magnesium atom would need 6 electrons to complete its highest occupied electron shell. In practice, a magnesium atom almost never does this, because the energy required would be too great. Instead, the magnesium atom transfers 2 electrons to one or more atom that are more electronegative than magnesium and thereby forms a magnesium ion with an electrical charge of +2. In this ion, the highest occupied shell of a magnesium atom is completely empty of electrons.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
How many electrons does Magnesium need to complete last shell?
Magnesium, in the second group, can either gain six electrons or lose two electrons to achieve a full outer shell.
How many electrons would be present in the valence shell of a iron atom?
Valence electrons are the total amount of electrons on the outermost shell of an atom. Meaning if the last shell has two, the valence electrons are two. But a complete valence shell would hold eight.
What is the total number of valence electrons in an atom of magnesium in the ground state?
Magnesium has atomic number 12 and so has 12 protons in the nucleus and 12 electrons in the neutral atom. It has three stable isotopes with 12, 13 or 14 neutrons. The neutrons have no real effect on the electronic structure. The ground state consists of the 1st shell of two electrons and the 2nd shell of 8 electrons. The last two electrons begin the 3rd shell and reside in the subshell named 3s. The last two electrons are the valence electrons.
How many electron shell does magnesium have?
Atomic magnesium has three shells.The shell numbering parallels the row number of the first three rows of the periodic table.Magnesium is in the third row. We number these 1,2,3 etc. and because of historical reasons, we also label them as K,L,M ... etc.Electron configuration of magnesium's shells are as follows.1s22s2 and 2p6 (one shell, two orbitals: 2s and 2p, of which the last one has 3 sub-orbitals: 2px, 2py, 2pz, each filled with 2 electrons)3s2With 2 electrons in the first shell, 8 electrons in the second and the last 2 in the 3rd, all 12 electrons of magnesium are accounted for. Done.Aside: The next row is where it gets tricky, but that is a separate question.
How many valence electrons does Sulfur?
there are 6 electrons in valence shell of sulphur so it accepts two electrons to complete the octet (8 electrons in last shell) so its valency in ionic compounds is always - 2.
How many electrons does Magnesium need to complete last shell?
Magnesium, in the second group, can either gain six electrons or lose two electrons to achieve a full outer shell.
How many electrons are found in the last energy shell of magnesium?
2 yea 2
Does helium have 2 electrons in its last shell?
Yes. It has one shell, and there are 2 electrons in this shell.
How many electrons would be present in the valence shell of a iron atom?
Valence electrons are the total amount of electrons on the outermost shell of an atom. Meaning if the last shell has two, the valence electrons are two. But a complete valence shell would hold eight.
How many outer shells are there in magnesium?
There are two electrons in the outer shell and there are three shells in total. The first shell holds two. The second eight. Then the last is two.
What is the total number of valence electrons in an atom of magnesium in the ground state?
Magnesium has atomic number 12 and so has 12 protons in the nucleus and 12 electrons in the neutral atom. It has three stable isotopes with 12, 13 or 14 neutrons. The neutrons have no real effect on the electronic structure. The ground state consists of the 1st shell of two electrons and the 2nd shell of 8 electrons. The last two electrons begin the 3rd shell and reside in the subshell named 3s. The last two electrons are the valence electrons.
How many valence electrons does Sulfur?
there are 6 electrons in valence shell of sulphur so it accepts two electrons to complete the octet (8 electrons in last shell) so its valency in ionic compounds is always - 2.
How many electron shell does magnesium have?
Atomic magnesium has three shells.The shell numbering parallels the row number of the first three rows of the periodic table.Magnesium is in the third row. We number these 1,2,3 etc. and because of historical reasons, we also label them as K,L,M ... etc.Electron configuration of magnesium's shells are as follows.1s22s2 and 2p6 (one shell, two orbitals: 2s and 2p, of which the last one has 3 sub-orbitals: 2px, 2py, 2pz, each filled with 2 electrons)3s2With 2 electrons in the first shell, 8 electrons in the second and the last 2 in the 3rd, all 12 electrons of magnesium are accounted for. Done.Aside: The next row is where it gets tricky, but that is a separate question.
How many electron does a noble gas have in its last shell?
Helium has 2 electrons in its last (and only) shell. All other noble gases have 8 electrons in its valence shell.
How many electrons does silicon have in its outer shell?
4V V-Valence Electrons Valence Electrons-Last electron (which is on the outer shell)
Why are Sodium and Chlorine not stable elements?
Sodium and Chlorine are chemically unstable due to the amount of electrons each has in the outer shells (also known as layers) of their atoms. Sodium has 11 electrons. First shell: 2 electrons Second shell: 8 electrons Third shell: 1 electron As the number of electrons in the last shell is not 8 and as the shell is not full Sodium is chemically unstable. Chlorine has 17 electrons. They are arranged like this: First shell: 2 electrons Second shell: 8 electrons Third shell: 7 electrons The number of electrons in the last shell is not 8, and the shell is not full, and thus, chlorine is chemically unstable. To give an example of a chemically stable element, Argon has 8 atoms in its last shell, which is why it is chemically stable and therefore does not react with any element.
How many electrons are in magnesium's third energy level?
2 electrons are in magnesiums last energy level
