Electron GK : Multiple Choice Questions

Question : Metals are good conductors of electricity because

A. they are ductile

B. they have free electrons

C. atoms in their molecules are loosely packed

D. they are electrically unstable

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Question Listed : Electron, Metals,

Question : Atoms are composed of

A. electrons and nuclei

B. protons only

C. electrons only

D. electrons and protons

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Question Listed : Electron, Nuclei, Nuclear Science,

Question : The luster of a metal is due to

A. presence of free electrons

B. its chemical inertness

C. its high polishing

D. its high density

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Question Listed : Electron, Chemistry,

Question : Which of the following determines the chemical properties of an element?

A. All of the above

B. Number of protons

C. Number of neutrons

D. Number of electrons

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Question Listed : Electron,

Question : The number of protons in a negatively charged atom (anion) is

A. less than the number of electrons in the atom

B. more than the number of electrons in the atom

C. less than the atomic number of the element

D. more than the atomic number of the element

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Question Listed : Electron, Atom,

Question : An atom differs from its ion in

A. Number of neutrons

B. Number of electrons

C. Mass number

D. Nuclear charge

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Question Listed : Electron,