Who discovered the neutron?
a. Ernest Rutherford
b. J. Thomson
c. James Chadwick
d. Niels Bohr
Submitted by :- Saqib Ali
CHEMISTRY
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What is the mass number of an element?
A. The number of protons in the nucleus
B. The number of neutrons in the nucleus
C. The sum of the number of protons and neutrons in the nucleus
D. The number of electrons in the outermost shell
Submitted by :- Jamil Ahmed
Which element has the highest number of protons in its nucleus?
A. Carbon
B. Uranium
C. Oxygen
D. Gold
Submitted by :- Jamil Ahmed
Which subatomic particle was discovered first?
A. Proton
B. Electron
C. Neutron
D. Isotope
Submitted by :- Jamil Ahmed
Who proposed the planetary model of the atom?
A. Ernest Rutherford
B. J. Thomson
C. Max Planck
D. Niels Bohr
Submitted by :- Jamil Ahmed
What is the atomic number of an element?
A. The number of protons in the nucleus
B. The number of neutrons in the nucleus
C. The number of electrons in the outermost shell
D. The sum of the number of protons and neutrons in the nucleus
Submitted by :- Jamil Ahmed
Who discovered the nucleus of the atom?
A. Ernest Rutherford
B. J. Thomson
C. Max Planck
D. Niels Bohr
Submitted by :- Jamil Ahmed
Which subatomic particle determines the chemical properties of an element?
A. Proton
B. Electron
C. Neutron
D. Isotope
Submitted by :- Jamil Ahmed
What is the charge of a neutron?
A. Positive
B. Negative
C. Neutral
D. It varies
Submitted by :- Jamil Ahmed
Who proposed the concept of isotopes?
A. Dmitri Mendeleev
B. John Dalton
C. J. Thomson
D. Frederick Soddy
Submitted by :- Jamil Ahmed