The electron configuration of nitrogen (N) is?
2 answers:
Answer: The electron configuration of nitrogen (N) is 1s22s22p3.
Explanation:
When electrons of an atom are distributed in a molecular orbital then this distribution is known as electronic configuration.
Atomic number of nitrogen is 7 and its electronic distribution is 2, 5.
Whereas the electronic configuration of nitrogen is as follows.
Thus, we can conclude that out of the given options only option (A) depicts correct electron configuration of nitrogen (N).
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Answer:
0.677 moles
Explanation:
Take the atomic mass of K = 39.1, O =16.0, P = 31.0
no. of moles = mass / molar mass
no. of moles of K3PO4 used = 4.79 / (39.1x3 + 31 + 16x4)
= 0.02256 mol
From the equation, the mole ratio of KOH : K3PO4 = 3 :1,
meaning every 3 moles of KOH used, produces 1 mole of K3PO4.
So, using this ratio, let the no. of moles of KOH required to be y.
y = 0.02256 x3
y = 0.0677 mol
If you don't find exactly 0.677 moles as one of the options, go for the closest one. A very slight error may occur because of taking different significant figures of atomic masses when calculating.