I need answers for these quickly Write the beta decay equations for the following

7. Sodium-24

8. Americium-247

9. Strontium-90

10. Gold-201

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

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.

The independent variable in an experiment will be the variable that you o a) change ob) hold constant ng c) observe for changes