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annamcda301
19.05.2021 •
Chemistry
A sample of ammonia (NH3) releases 5.66 kJ of heat as it solidifies at its melting point. What is the mass of the sample? DHsolid = – 5.66 kJ/mol
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Ответ:
The unit digit of the number of the group indicates the number of valence electrons. This is 6.
6 valence electrons means that it has 2 electrons in the s orbital and 4 electrons in the p orbital.
Then the answer is s orbital and p orbital.
You can verify this by searching the electron distribution, which is:
[Ar] 3d10 4s2 4p4
The six electrons in the highest energy level (4), 4s2 and 4 p4 are the valence electrons.