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Question 1
Which of the following element is exists as a highly toxic pale yellow diatomic gas under standard conditions; and it reacts with almost all other elements except Helium and Neon?
Question 2
Consider the following
1) Most of the area in an atom is vacant
2) Positive charge in an atom is evenly distributed
3) Positron has an electric charge of +1 e
Which of the following is/are observations of Rutherford’s Alpha scattering Experiment?
Question 3
In a given atom, no two electrons can have the same value for all the four quantum number. This is called–
Question 4
In Tritium (T), the number of protons (P), and neutrons (N) respectively are
Question 5
An electron and a proton are circulating with the same speed in circular paths of equal radius. Which one among the following will happen, if the mass of a proton is about 2,000 times that of an electron?
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Dec 28CDS & Defence