KVS SCIENCE QUIZ 11 (ATOMIC STRUCTURE)

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Question 1:

The atomic number of potassium is 19 and its mass number is 39. The number of neutrons in its atom will be 

Question 2:

Which one of the following element's isotope is used in the treatment of cancer?

Question 3:

During the transition of electrons from higher energy levels to lower energy levels. Energy is-

Question 4:

Which of the following is responsible for the advent of quantum mechanics ?

Question 5:

Match List I and list II 


Question 6:

The maximum number of electron present in n = 3 and s = +1/2 is

Question 7:

An atom of X element has 7 protons. Its mass number is 14 and has 10 electrons. Identify X

Question 8:

The relation between energy of radiation and its frequency was given by 

Question 9:

Electron, lightest stable subatomic particle. It carries a negative charge of 1.602 × 10−19 coulomb, which is considered the basic unit of electric charge. It is discovered by-

Question 10:

What is the maximum number of electrons in the K shell ?