Anelement is placed in 2nd group and 3rd period table burns in rhe presence of oxygen to firm basic oxide. a) Identify the element b) Write the balanced eqn when it burns in presence of air. c) Write a balance eqn when this oxide is dissolved in water. d) Draw the electron dot structure for the formation of this oxide.
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The element in 2nd group and 3rd period is Magnesium Mg. It is an alkali metal. Its valency is clearly +2.
It has electronic configuration : 1s2 2s2 2p6 3s2
2 Mg + O₂ ==> 2 Mg O (s)
Magnesium Oxide dissolves sparingly in water to produce Magnesium Hydroxide (or Magnesia). Magnesium Oxide is very stable as Mg and Oxygen atoms are strongly bonded.
2 Mg O (s) + H₂O (l) ==> 2 Mg (OH)₂ (s)
Oxygen: z = 16 . 1s2 2s2 2p6 3s2 3p4
. .
Mg : : O : Mg = O
It has electronic configuration : 1s2 2s2 2p6 3s2
2 Mg + O₂ ==> 2 Mg O (s)
Magnesium Oxide dissolves sparingly in water to produce Magnesium Hydroxide (or Magnesia). Magnesium Oxide is very stable as Mg and Oxygen atoms are strongly bonded.
2 Mg O (s) + H₂O (l) ==> 2 Mg (OH)₂ (s)
Oxygen: z = 16 . 1s2 2s2 2p6 3s2 3p4
. .
Mg : : O : Mg = O
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Answer:
e
Explanation:
The element in 2nd group and 3rd period is Magnesium Mg. It is an alkali metal. Its valency is clearly +2.
It has electronic configuration : 1s2 2s2 2p6 3s2
2 Mg + O₂ ==> 2 Mg O (s)
Magnesium Oxide dissolves sparingly in water to produce Magnesium Hydroxide (or Magnesia). Magnesium Oxide is very stable as Mg and Oxygen atoms are strongly bonded.
2 Mg O (s) + H₂O (l) ==> 2 Mg (OH)₂ (s)
Oxygen: z = 16 . 1s2 2s2 2p6 3s2 3p4
. .
Mg : : O : Mg = O
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