Mark the following statements True or False.
1.All elements present in a group are chemically similar.
2.The modern periodic law is based upon atomic mass.
3.The importance of atomic number as the fundamental property was realised byHenry Mosely.
4.There are 18 groups in the modern periodic table.
5.Non-metals are present in the middle portion of the periodic table.
6.Each period in modern periodic classification begins with filling of electrons in a new shell.
Only True or False
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Answer:
T
F
T
T
F
F
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