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SURA PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS -ADDITIONAL QUESTIONS & ANSWERS ( FILL IN THE BLANKS )
- First group elements are called as .
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- Second group elements are called as .
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- The elements present in groups 3 to 12 are called as .
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- Boron family elements are placed in group .
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- 14^(th) group elements are called as .
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- Chalcogen means
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- Halogens are placed in group .
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- Halogens means .
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- Noble gases are placed in group .
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- The valency of alkali metals is .
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- The valency of alkaline earth metal is .
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- The atoms of the 'group zero ' elements are unreactive because in t...
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- The behaviour of repetition of a property after a regular interval is...
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- As the positive charge increase , the size of cation
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- As the negative charge increase, the size of anion .
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- The nature of bonding between the atoms in a molecule can be predicte...
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- Metals which have less density than water are .
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- Metals have density .
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- is a metal which is non-conductor.
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- and are non-malleable .
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