Answer:
Explanation:
b is the most stable( noble gas ) since it has an octet valance shell and can't loses or gains any more of electrons
Answer:
D
Explanation:
This is because, of chemical reaction
The noble gases don't react because they have their full orbital. They have 8 valence electrons, meaning that they are happy and stable. They dont need any more electrons, which means that they dont need to bond. That makes them un- reactive.
Answer:

Explanation:
Hello!
In this case, given the relationship between velocity, wavelength and frequency:

By plugging in the given wavelength and frequency, we obtain the following speed:

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