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Question 1
When a helium atom loses an electron it becomes
Question 2
The value of Avogadro Number is
Question 3
The mass number of a nucleus is
Question 4
The orientation of an atomic orbital is governed by
Question 5
Acids turn_____ litmus paper to _____.
Question 6
The molecules of different compounds in which the total number of atoms and electrons is same are known as?
Question 7
Alpha particles are positively charged helium nuclei which have…………… unit charge and …………mass.
Question 8
What is the meaning of word “Aufbau” in Aufbau’s Principle?
Question 9
Atomic number of which of the following elements is greater than that of Silicon________
Question 10
The electronic configuration of an atom having atomic number ‘20’ is
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Dec 9ESE & GATE EC
