Atoms and Molecule
Chlorine is a ________ element.
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The first energy level or shell is represented by which one of the following letter?
Calculate the mass of water which contains the same number of molecules as are contained in 60 g of oxygen.
Which one of the following statements is correct?Statement1:Nuc≤usofana→mis¬ativelychar≥d.Statement 2: Nucleus of an atom consists of protons and neutrons.
What is the maximum number of electrons that can be accommodated in the second shell?
Which of the following is incorrect statement for the atoms?
Cathode rays are:
Select the relation between atomic number, mass number and number of neutrons.
An atom contains 6 protons and 8 neutrons. What should be its atomic number?