Which correctly lists two characteristics of crystal faces that define crystal systems? angle and number
number and color
size and hardness
size and angle

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

How is the atomic number of a nucleus changed by alpha decay

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.