An isotope of xenon has an atomic number of 54 and contains 77 neutrons. what is the xenon isotope's mass number? 23 54 77 131

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

What is the equation for calculating rf values

Asap what is the temperature when the volume is 700 ml? a 500 k b 200 k c 600 k d 700 k