--------- are highly penetrating and require thicker sheets of higher atomic number materials to reduce the intensity.
gamma rays
Which statement is true about mirror nuclei? A) They have the same neutron number B) They are a type of isotope C) They have the same mass number but protons and neutrons interchanged D) They have different mass numbers but same proton numb
C
Alpha particles are composed of ------- .
two protons and two neutrons
The given gold atom has ---------- neutrons.
The nucleus has -------- charge(s).
positive
Nuclear density depends on volume of a nucleus.
False
Rutherford was successful in bombarding nitrogen with alpha particles and obtaining an oxygen nucleus and a/an -------.
proton
Which radiation has the highest ionizing power? A) Alpha B) Beta C) Gamma D) Neutron
A
A nucleus is made up of --------and ---------.
protons and neutrons
Nuclear charge is -------.
+Ze
The shell model of the nucleus is analogous to: A) Planetary model of the atom B) Liquid drop model C) Free electron gas model D) Rutherford’s gold foil experiment
A
The tenth value layer reduces the transmitted gamma intensity to ------ of the original intensity.
one tenth
Which interaction is dominant for high-energy gamma rays? A) Photoelectric effect B) Compton scattering C) Pair production D) Alpha emission
C
Geiger counter is used for --------- measurement.
alpha, beta, and gamma
Gamma rays have: A) Positive charge B) Negative charge C) Zero charge and are electromagnetic waves D) Large mass
C
The given nuclides are---------.
isotones
A sheet of ------- is need to stop betas.
aluminum or plastic
Radoactiveisotopes with ------------ half-lives are used in nuclear medicine.
short
------- are nuclei with the same atomic number Z but different mass number A.
Isotopes
Radiation from cobalt 60 (27 Co60) are used to treat--------.
cancer
Binding energy per nucleon is maximum for nuclei with: A) 𝐴 ≈ 1 B) 𝐴 ≈ 60 C) 𝐴 ≈ 100 D) 𝐴 ≈ 200
B
--------- are the lightest particles in an atom and they orbit the nucleus.
Electrons
Reducing half of the distance, increases the exposure by a factor of -----.
four
The binding energy per nucleon curve shows that fusion is energetically favorable for: A) Light nuclei B) Heavy nuclei C) Mid-mass nuclei D) All nuclei equally
A
The Stable light nuclei contain--------.
almost equal number of protons and neutrons