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22/11/2020 10:31 am
Topic starter
Fill in the blanks
1. The concept of grouping elements into triads was given by ……… .
2. Mendeleev’s basis for the Periodic Table is ……… .
3. The basis for Modern Periodic Table is ……… .
4. (a) Metallic character ……… down the group.
(b) Atomic size ……… along the period.
(c) Electronegative character ……… down the group.
5. Isotopes belong to the same ……… in the Periodic Table.
1 Answer
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22/11/2020 10:32 am
1. Dobereiner
2. atomic mass
3. atomic no.
4. (a) increases
(b) decreases
(c) decreases
5. position