How many lone pairs of electron are there on the central ...
How many lone pairs of electron are there on the central atom of the H2O molecules?
1
2
3
4
Correct answer is B
In a water molecule, oxygen is bonded to two hydrogen atoms. Leaving oxygen with four electrons which pair up with one another to form two lone pairs of electrons.
3Cl2 + 2NH3 → N2 + 6HCl. In the above reaction, ammonia acts as...
If the value of ΔH is positive for a reaction, it means that the reaction is? ...
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