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Why electrons are considered as the univ...

Why electrons are considered as the universal constituents of matter?

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This is because the electrons are emitted from various siurces and various methods but have the same charge always i.e., `(e ) /(m_e )` ratio remains the same .( experiment fact) .
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Knowledge Check

  • Which of these is considered as the fundamental unit of matter?

    A
    Atom
    B
    Protons will flow from the positively-charged objects towards the negatively-charged object.
    C
    Neutron
    D
    Electrons and protons

  • Consider the following items. I. Proteins, carbohydrates and fats. II. Vitamins. III. Minerals. IV. Water Whicih of the above are considered as the constituents of food?

    A
    I,II and IV onlty
    B
    I and III only
    C
    II and III only
    D
    I,II,III and IV

  • Which is not considered as a constituent of portland cement?

    A
    `Ca_2SiO_4`
    B
    `Ca_3SiO_5`
    C
    `Ca_3Al_2O_6`
    D
    `CaSiO_3`
    • AAKASH INSTITUTE-STRUCTURE OF ATOM-EXAMPLE
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    13. Calculate the radii of 2nd Bohr orbit ofLi^(2+)

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