1.a) write down the electronic configuration of magnesium.
b)Give two general properties of compound formed by combination of magnesium and oxygen.
c) show the formation of this compound by transfer of electron.
Answers
Explanation:
Electronic configuration of Mg (12) : 2, 8, 2.
Electronic configuration of O (8) : 2, 6.
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Formation of MgO :
Mgo is formed by the ionic bonding between \rm{Mg^{2+}}Mg
2+
cation and \rm{O^{2-}}O
2−
anion.
During the formation of MgO, magnesium loses 2 electrons and oxygen gains 2 electrons. Refer to the attached image for more information.
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Type of bond formed :
Ionic bond.
Definition : Ionic bond or electrovalent bond is a type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.
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Physical properties of ionic compounds :
High melting and boiling point : This is because a considerable amount of energy is required to break the strong inter-ionic attraction.
Ionic compounds are solid and hard : This is due to the strong force of attraction between the positive and negative ions.
Answer:
ANSWER
Atomic number of sodium - 11
Electronic configuration of sodium - 1s
2
2s
2
2p
6
3s
1
It has one valence electron, it will lose one electron to get octet configuration
Atomic number of oxygen - 8
Electronic configuration of oxygen - 1s
2
2s
2
2p
4
It is two electrons short of octet configuration, thus it will gain two electrons.
During the bond formation between sodium and oxygen, two sodium atoms loses one electron each to oxygen atom,
2Na−2e
−
→2Na
+
O+2e
−
→O
−2
2Na
+
+O
−2
→Na
2
O
Atomic number of Magnesium - 12
Electronic configuration of Magnesium -1s
2
2s
2
2p
6
3s
2
It has two valence electrons , it will lose two electrons to get octet configuration
Atomic number of oxygen -8
Electronic configuration of oxygen −1s
2
2s
2
2p
4
It is two electrons short octet configuration, thus it will gain two electrons.
During the bond formation between Magnesium and Oxygen, one magnesium atom loses two electrons to oxygen atom.
Mg−2e
−
→Mg
2+
O+2e
−
→O
−2
Mg
+2
+O
−2
→MgO