Periodic Classification of Elements

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Question

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Question 1 :

Rows in Mendeleev's table are called ......... .

1. elements
2. periods
3. groups
4. molcules
Answer
15417

Question 2 :

The periodic table organizes elements according to ........... .

1. properties
2. number of atoms
3. strength of bases & acids
4. both (b) and (c)
Answer
15418

Question 3 :

Today, the periodic table is used to ............ .

1. identify the gaps in the table
2. discover new elements
3. predict properties of elements yet to be discovered
4. none of these
Answer
15419

Question 4 :

A quick glance at the table reveals a lot about ........ .

1. the reactivity of an element
2. whether it is likely to conduct electricity
3. whether it is hard or soft
4. all of these
Answer
15420

Question 5 :

Elements in the same column as one other (groups) in the periodic table, share .......... .

1. similar molecular structures
2. similar properties
3. similar number of electrons in the K shell
4. similar molecular formulae
Answer
15421