Iron has atomic number 26.Naturally mined iron contains isotopes of mass numbers 54, 56, 57, and 58.Which of the following statements is FALSE?
A) every atom of iron has 26 protons
B) some iron atoms have 30 neutrons
C) some iron atoms have 54 neutrons
D) the isotopes may be separated in a mass spectrometer
E) there are four kinds of naturally occurring iron atoms with the same chemical properties
Correct Answer:
Verified
Q1: A nucleus with a mass number of
Q2: The binding energy of a nucleus is
Q3: The greatest binding energy per nucleon occurs
Q4: If a nucleus has mass M, Z
Q5: Bromine, with atomic mass 79.942 u, is
Q7: The mass density of an atomic nucleus:
A)is
Q8: The isotopes of an element:
A)cannot be separated
Q9: Let Z denote the atomic number and
Q10: A femtometer is:
A)larger than 10-9 m
B)10-9 m
C)10-12
Q11: The smallest particle of any chemical element
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