When limestone is decomposed at high temperature and the residue is treated with water, the compound that is formed is
1 answer:
The compound that is formed is calcium hydroxide.
<h3>Preparation of calcium hydroxide</h3>When limestone is decomposed at a high temperature, calcium oxide is formed as the residue.
When the calcium oxide residue is treated with water, a calcium hydroxide solution is formed.
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Answer:
D)
Explanation:
Carbon.
The electronic configuration is -
Thus, 2s orbital is fully filled and p orbital can singly filled 3 electrons. Thus, Carbon has 2 singly occupied orbitals.
But in methane, it forms 4 bonds. So, 1 electron each from 2s orbital jumps to the next orbital in the p subshell.
Thus, the configuration is:-
Thus, the valence electron configuration is:-