The central core of every atom is
a. a nucleus.
b. a compound.
c. an electron
d. a neutron.

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.

Which one of the following substances would be the most soluble in ccl4? na2so4 h2o ch3ch2ch2ch2oh c4h10 hi

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa