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DochEvi [55]
3 years ago
6

An atom of fluorine has an atomic mass of 19 u. Keeping in mind that its atomic number is 9, what can you infer about this atom?

Chemistry
1 answer:
Oliga [24]3 years ago
8 0
The fluorine atom has a neutron number of 10 it also have 10 valence electrons
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How many electrons are there in second principal energy<br> level(n=2) of a phosphorus atom?
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Answer:

8 electrons

Explanation:

Phosphorous is the element of group 15 and third period. The atomic number of chlorine is 15 and the symbol of the element is P.

The electronic configuration of the element phosphorus is:-

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Thus, from the electronic configuration shown above,

In n = 2, the total number of electrons are 8 which are present in 2s^22p^6

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Since soda Both regular or diet soda contains more solute than water , their freezing point is will consequently be lower than water

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