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Chemistry : Atoms, Molecules, Elements and Compounds


Answer the following questions by choosing the appropriate option.

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Multiple choice

Your Performance  

1.

The number of electrons in a neutral atom is equal to its atomic number.

  True

  False

 

2.

Electrons are present in the nucleus.

  True

  False

 

3.

The nucleus consists of protons and neutrons and is negatively-charged.

  True

  False

 

4.

In a neutral atom, the number of electrons and protons is equal.

  True

  False

 

5.

The atom is mainly empty.

  True

  False

 

6.

Since an atom of the element sodium contains 11 protons and 12 neutrons, its atomic number is 23.

  True

  False

 

7.

The elements are arranged in order of decreasing atomic numbers in a table called the periodic table.

  True

  False

 


 
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