I tried asking this earlier, but no one answered so imma put it again. The selected answer is incorrect, I'm doing corrections.

Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j

What electron configurations do atoms usually achieve by sharing electrons to form covalent bonds?

Which of the following is the largest disadvantage of about half of the electricity in the united states comes from burning