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9th CBSE
IMPORTANT
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An atom of element E contains 3 protons, 3 electrons and 4 neutrons. What is its atomic number?

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Important Questions on Structure of Atom

EASY
9th CBSE
IMPORTANT

An atom of element E contains 3 protons, 3 electrons and 4 neutrons : 

What is its mass number?

EASY
9th CBSE
IMPORTANT

An atom of element E contains 3 protons, 3 electrons and 4 neutrons:

Write the electronic configuration of the element E.

MEDIUM
9th CBSE
IMPORTANT

An atom of element E contains 3 protons, 3 electrons and 4 neutrons : 

State whether element E is a metal or non-metal. Why? 

HARD
9th CBSE
IMPORTANT

An atom of element E contains 3 protons, 3 electrons and 4 neutrons : 

What type of ion, cation or anion, will be formed by an atom of element E? Why?

MEDIUM
9th CBSE
IMPORTANT

An atom of element E contains 3 protons, 3 electrons and 4 neutrons:
Write the symbol of the ion formed by an atom of element E.

A E     B E+    C E-

Enter your answer as A, B or C.

MEDIUM
9th CBSE
IMPORTANT
An atom of element E contains 3 protons, 3 electrons and 4 neutrons : What could element E be? Name it. 
EASY
9th CBSE
IMPORTANT
An atom of an element X may be written as  X49. What does the figure 9 indicate?
EASY
9th CBSE
IMPORTANT
An atom of an element X may be written as  X49. What does the figure 4 indicate? (Mass number/ Atomic number)