Atomic structure

81.Which of the following is the electronic configuration for metallic elements?
 
A. 2,8
 
B. 2,8,7
 
C. 2,8,18
 
D. 2,8,18,2
 
Option”D” is correct
82.If there are 2 protons, two neutrons and two electrons in an atom of an element, then the atomic number of that element will be
 
A. 2
 
B. 4
 
C. 6
 
D. 8
 
Option”B” is correct
83.What will be the number of protons in a negatively charged atom
 
A. greater than the atomic number of the element
 
B. less than the atomic number of the element
 
C. more than the number of electrons in the atom
 
D. less than the number of electrons in the atom
 
Option”D” is correct
84.When Rutherford bombarded a thin sheet of metal with alpha (α) particles to discover the nucleus,
 
A. Most of the alpha particles passed through the metal foil without deflection.
 
B. All the alpha particles passed through the metal foil without deflection.
 
C. Most of the alpha particles were deflected by making small angles.
 
D. Most of the alpha particles were deflected back.
 
Option”A” is correct
85.the nature of the element can be determined
 
A. by electronic configuration
 
B. by atomic number
 
C. by atomic mass
 
D. by atomic mass
 
Option”A” is correct
86.Which of the following is the maximum number of electrons that can be present in the M shell?
 
A. 2
 
B. 8
 
C. 18
 
D. 32
 
Option”C” is correct
87.Who developed the model of atomic structure?
 
A. alfred nobel
 
B. Faraday
 
C. bohr and rutherford
 
D. Volta
 
Option”C” is correct
88.Who first proposed the atomic theory of matter?
 
A. rutherford
 
B. John Dalton
 
C. J. J. Thomson
 
D. Niels Bohr
 
Option”B” is correct
89.The shape of the nucleus of an atom is
 
A. 10¯⁵ m
 
B. 10¯⁹ m
 
C. 10¯¹º m
 
D. 10¯¹⁵ m
 
Option”D” is correct
90.Which of the following is a temporary particle?
 
A. electron
 
B. proton
 
C. neutrons
 
D. all of these
 
Option”C” is correct

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