The nuclear binding energy of an atom of ⁹4Be is 9.318x10^-12 j per atom calculate the atomic mass of ⁹4Be

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

When the mercury level in a barometer decreases that atmospheric pressure has

8. what happens to matter during a chemical reaction