EASY
9th CBSE
IMPORTANT
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The positively charged central part of the atom is called .
 

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Important Questions on Structure of Atom

EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 15
 The number of protons in the nucleus of an atom is equal to the number of _____.
 
EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 15
The charge on the nucleus of an atom is positive because of the presence of _____.
EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 15
Atomic number = Number of _____= Number of electrons in an atom.
 
EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 15
In the notation  Al1327, the number 27 represents _____ of Al.
EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 15
The sum of the total number of protons and neutrons in the nucleus of an atom is called its _____
EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 1
Define an orbit.
HARD
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 2
Draw the orbits around the nucleus.
MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 3
The energy states is also called energy shell or shell. Write the symbols of shells for first, second and third energy states of an atom.