The Isotope Has a = _____ and Z =

Q15: An atom with A = 21 and

Q16: Strontium and barium have similar chemical properties.

Q20: Which of the following properly represents the

Q25: All elements have at least two naturally

Q37: Iodine has smaller ionization energy than chlorine.

Q55: Which atom has the smallest atomic radius?<br>A)K<br>B)Ga<br>C)Br<br>D)Rb

Q59: All of the elements in group 2A

Q60: The active ingredient in the drug Fosamax

Q68: The electron configuration for calcium is 1s²2s²2p⁶3s²3p⁶4s².

Q83: The element symbol S represents sodium.