I would say that descriptive investigations aren't repeatable because it means that you are only describing something - you ask certain question about something, but do not form a hypothesis at that point yet. So it would be a waste of time to simply ask the same questions over and over again with no hypothesis to prove, which is why these types of investigations cannot be repeated.
They fit in by atomic mass and amount of valence electrons categorized in families
Answer:
nanograms - 7310
kilograms - 7.310000000000001e-9
Answer:
1. Mg(CH3CO2)2 - magnesium acetate
2. NH4CN - ammonium cyanide
3. NaClO3 - sodium chlorate
Closest to Mg: Neon Must lose 2 electrons?
Closest to S: Argon Must gain 2 electrons?
I know the noble gases are right, but I'm not 100% sure if you just need to add/subtract electrons.
