18) Which two ions have the same electron configuration in the ground state? A) Rb+ and Cs+
B) Ba2+ and I-
C) Se2+ and I-
D) Fe2+ and Fe3+

There are 6.022 x 10^23 atoms of hg in 1 mole of hg. the number of atoms in 4.5 moles of hg can be found by multiplying 4.5 by 6.022 x 10^23 a. 2.7 x 10^24 b. 27 x 10^23 c. 2.71 x10^24 d. 27.099 x 10^23

What is an example of a physical property?

Apush or pull that moves or changes and object when to objects touch