The regulation of sodium:
a) involves hypothalamic osmoreceptor detection of ion concentration
b) involves aldosterone, a hormone that increases sodium excretion in the kidneys
c) is linked to blood pressure
d) is due to specific sodium receptors in the hypothalamus

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.