2. carboxylic acid chlorides can be prepared readily from carboxylic acids using thionyl chloride. an alternative reagent, oxalyl chloride, can be also be used and has advantages in certain cases. write a stepwise mechanism for the reaction of oxalyl chloride with a carboxylic acid to form a carboxylic acid chloride.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

c, liquids evaporate, creating a gas

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a