Chemistry Basic Concept

A. Isotopes with odd atomic number are abundant
B. Isotopes with odd atomic number and even mass number are abundant
C. Isotopes with even atomic number and even mass number are abundant
D. Isotopes with even atomic number and odd mass no are abundant

A. 1-mole molecules of water
B. 1-gram molecule of water
C. 3-gram atoms
D. all

A. CH2 C12
B. CH3C1
C. CC14
D. CHCL3

A. Relative abundance
B. Average mass of element
C. Number of isotopes
D. Relative isotopic mass

A. Atomic number
B. Relative abundance
C. Electronic configuration
D. All of the above

A. 0.2m
B. 0.2mm
C. 0.2nm
D. 0.2pm