HARD
9th CBSE
IMPORTANT
Earn 100

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?

Important Questions on Structure of Atom

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)
EASY
9th CBSE
IMPORTANT
An atom of an element X may be written as  X49. What is the number of protons in atom X?
MEDIUM
9th CBSE
IMPORTANT
An atom of an element X may be written as  X49. What is the number of neutrons in atom X4/ 5
EASY
9th CBSE
IMPORTANT
An atom of an element Xmay be written as  X49. What is the number of electrons in an atom X9/ 4
HARD
9th CBSE
IMPORTANT
An atom of an element X may be written as  X49. How many electrons are there in the outermost shell of an atom of element X2 / 4