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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.

Atomic number of an element is the number of neutrons present in the nucleus of the atom.

  True

  False

 

2.

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

  True

  False

 

3.

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

  True

  False

 

4.

Of a proton, neutron and an electron, the electron is the lightest.

  True

  False

 

5.

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

  True

  False

 

6.

The smallest atom is that of hydrogen.

  True

  False

 

7.

Atomic weight of an element is the mass of an atom of that element in grams.

  True

  False

 


 
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