Okay, if I'm understanding the question you are asking:
"Is it normal for Aipom to know Ampibom's moves?"
If so, the answer's yes! Don't worry.
Inheriting TMs and HMs in breeding is perfectly normal. You can read about it here and scroll down to 'TM and HM moves'. Tail Whip is simply a move that it learns normally when it is newly hatched. :)
As for your second question, unfortunately not. Instead, it will get the Technician ability.
Hope I helped. :)
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