What is the valence electron configuration for the oxygen atom?
[He] 2s² 2p⁴
What is the electron configuration of an isolated O atom?
In writing the electron configuration for oxygen the first two electrons will go in the 1s orbital. Since 1s can only hold two electrons the next 2 electrons for O go in the 2s orbital. The remaining four electrons will go in the 2p orbital. Therefore the O electron configuration will be 1s22s22p4.
What noble gas has the same electron configuration as Mg2+?
Neon
When becoming an ion magnesium Mg will have the electron configuration of which noble gas?
noble gas neon
Why does magnesium oxide exist as Mg2 O2?
(i)The simple answer is to satisfy the octet rule. (ii) The solids are held tightly due to which it has to satisfy the bond theory. (iii)To ionize Mg to Mg 2+ is about 2 times and O2- provides about endothermic reaction due to entropy phenomena. (iv)So, when Mg 2+ and O2- combines they form MgO.
Why is magnesium oxide MgO not Mg2O2?
No, Mg2O2 is not the correct formula for Magnesium Oxide. – This is because the formula of a compound tells us about the minimum no of atoms of each component combined together. – Here, the oxidation no of Mg is +2 and the oxidation no of oxygen is -2.
Why does magnesium form Mg2+ and not Mg+?
magnesium atom has atomic number 12. it means 12 protons in the nucleus and 12 electrons. These are arranged 2 in the Core shell, then 8 in the antipenultimate shell, and the last two in the penultimateshell. The magnesium ion Mg2+ is formed when the magnesium atom loses the two electrons from its outer shell.
Why does magnesium from Mg 2 and not MG?
Explanation: Magnesium is under group 2 that also has a valence electron of 2. To achieve stability and to follow the octet rule, these 2 electrons in the outer shell will be removed making this atom into an ion with a 2+ charge. Thus, magnesium has the ionic symbol of Mg2+ .
How can magnesium attain stability?
As we have already seen magnesium has a valency of +2. So it has to give 2 electrons to attain stability. Oxygen has a valency of -2 so it needs electrons to attain stability. Therefore, magnesium gives oxygen 2 electrons and attains a positive charge and oxygen attains a negative charge by gaining two electrons.