Answer:
C. BF3
Explanation:
The boron in BF3 is electron poor and has an empty orbital, so it can accept a pair of electrons, making it a Lewis acid.
I am pretty sure the answer is . But I might be wrong.
The bond is polar covalent because the difference in electronegativity is greater than 0.4, but less than 1.7.
Electronegativity refers to the ability of an atom in a compound to attract the electrons of the bond towards itself. It is a periodic trend that increases across the period but decreases down the group.
The electronegativity difference between the two atoms as shown in the question is 1.55. This means that the bond is polar covalent because the difference in electronegativity is greater than 0.4, but less than 1.7.
Learn more: brainly.com/question/2510654
Temperature increase with altitude through the stratosphere because "<span>The ozone layer is found in the stratosphere".
Stratosphere is the second layer of the atmosphere of the Earth. 20% of the mass of the atmosphere is found in this layer.
</span><span>The temperature of the </span>stratosphere increases as the altitude increases due to the presence of the ozone layer in it as the ozone layer absorbs the ultraviolet radiations of the Sun which causes an increase in the temperature of this layer.