Which of thfollowing statements is (are) TRUabout radioisotopes?
A) Radioisotope decays at a constant rate.
B) Decay of a radioisotope is independent of temperature.
C) Decay of a radioisotope is independent of pressure.
D) A radioisotope decays into a predictable product.
E) All of these are true.
Correct Answer:
Verified
Q18: Thneutral subatomic particlis
A)the neutron.
B)the proton.
C)the electron.
D)both the
Q19: According to nutritional evidences, thhuman body requires
Q20: In an atom, _ spin arounthnucleus.
A)electrons
B)protons
C)neutrons
D)both neutrons
Q21: How many types of chemical bonds arfounwithin
Q24: How many protons arin thnucleus of a
Q25: Electrons arsharein bonds called
A)covalent bonds.
B)ionic bonds.
C)polar bonds.
D)nonpolar
Q26: Phosphorus has _ vacancies.
A)1
B)2
C)3
D)5
E)8
Q27: Tracer isotopes
A) are used only in plants.
B)
Q27: An atothat carries a chargis callea(n)
A)ion.
B)molecule.
C)compound.
D)element.
E)microelement.
Q28: Which of thfollowing statements is NOT true?
A)All
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