The best example of diffraction is the image of
question 8 options:
a ring around the sun caused by particles in the air.
a pencil that appears broken in a glass of water.
a fingerprint that appears to be enlarged under a magnifying glass.
your image in a mirror

a electronegativity decreases beacuse the size of nucleus is bigger.

i believe the answer is 5,000

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.