Q.1 atoms of the same element are ......................... in all respect while the atoms of different elements are .................... in respect of mass and ........................ properties.

Q.2 .....................is the abbreviation used for the lengthy name of an element.

Q.3 ......................is the chemists counting unit.

Q.4 the symbolic representation of a molecule is called.

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Answers

2016-02-13T21:53:14+05:30
Identical, different,chemical,symbol
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