Which is the daughter element in the following decay equation? 231
Pa →
He +
227
AC
91
2
89
227
AC
O A. 89
4
He
O B. 2
231
91
Pa
O c.
223
87
O D.

Nonpoint source pollution is difficult to control because it

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.

Draw a line graph showing the relationship between temperature in kelvin as a function of kinetic energy.