EASY
9th CBSE
IMPORTANT
Earn 100

The helium nuclei ejected by some radioactive elements are commonly called:

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Important Questions on Structure of Atom

EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 4 - Structure of Atom>EXERCISE 4A>Q 48
The smallest electric charge which cannot be subdivided is:
EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 4 - Structure of Atom>EXERCISE 4A>Q 1
Who discovered the positively charged rays? 
EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 4 - Structure of Atom>EXERCISE 4A>Q 2
Who discovered the nucleus within an atom? 
MEDIUM
9th CBSE
IMPORTANT
Core science chemistry>Chapter 4 - Structure of Atom>EXERCISE 4A>Q 3
State the main drawback in Rutherford's structure of an atom.
EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 4 - Structure of Atom>EXERCISE 4A>Q 4
Who discovered neutrons?
EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 4 - Structure of Atom>EXERCISE 4A>Q 5
One electron is present in the outermost shell of the atom of an element X. What would be the nature and value of charge on the ion formed if this electron is removed from the outermost shell?
EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 4 - Structure of Atom>EXERCISE 4A>Q 6
Write down the electron distribution of chlorine atom. How many electrons are there in the L shell? 
(Atomic number of chlorine is 17)
EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 4 - Structure of Atom>EXERCISE 4A>Q 7

In the atom of an element X, 6 electrons are present in the outermost shell. If it acquires the noble gas configuration by accepting the requisite number of electrons, then what would be the charge on the ion so formed?