As we move across the periodic table of elements, certain trends are evident. The placement of individual elements in the periodic table allows us to predict many characteristics of elements such as state of matter at room temperature, reactivity, and
valence electrons just to name a few. As one moves from left to right across the periodic table, what trends are evident?

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.

What is the next step in the process after a substrate enters the active site of an enzyme

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.