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it is present in nucleus
it is a fundamental particle
it does not move
it does not carry any charge
The electrochemical cell stops working after some time because _
The electronic configuration of an atom having atomic number ‘20’ is
The electronic configuration of atom / ion can be defined by which of the following?
The element of an electric stove made
The element used in the manufacture of safety matches is
The elements that provide colour to fireworks are
The enzyme that converts glucose to ethyl alcohol is
The exhaled air contains
The existence of different isotopes of an element is due to the presence of a different number of _ in the nucleus of their atoms
The fibre least prone to catch fire is