Answer:
True
Explanation:
This is because the Earths ionisphere was distrubed which makes radio communications.
<span>London forces also known as "induced-dipole-induced-dipole interactions" and are in principle found in every molecule. The interaction occurs from the transient dipoles all molecules have as a result of fluctuations in the instantaneous positions of electrons.
</span><span>Dipole-dipole arises when we are able to set up a polarity in the molecule. So for an example if a highly electro-negative atom is bond to a less electro-negative atom then there will be a polarity in the molecule and we therefore have the dipole-dipole interaction.
</span><span>For the determination of geometry for the specific examples , use the VSEPR (Valence Shell Electron Pair Repulsion) model and by that determine the geometry.</span>
Answer
alkali metals
Explanation:
metals of first and second group of periodic table have ability to donate electron and form positive ions
I think the answer is C) 1/8, I’m sorry if it’s wrong
Answer:
10mm
Explanation:
Rf value = 0.25 = 25% of total distance traveled by eluant.
0.25*40mm =10mm
