Question

4: Give reasons for the following
15
1. Occurrence of characteristic properties of elements takes place at definite intervals
in the modern periodic table
2. Properties of elements are periodic functions of their atomic numbers and not
atomic weights
3. Atomic size of an element depends on the nuclear charge of that element
4. Down a group electronegativity should increase with increase in nuclear charge but it
is seen that the electronegativity decreases
5. If combining atoms have nearly similar electronegativities the bond between them is
covalent
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Answer 1

Answer:

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give quetions lroperly