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Q:

In modern periodic table while going from top to bottom in a group ______.

 

A) size of an atom increases B) size of an atom decreases
C) ionisation energy of an atom increases D)  size and ionisation energy of an atom increases

Answer:   D)  size and ionisation energy of an atom increases



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Subject: Chemistry
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Which of the following salts is acidic in nature?

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Answer & Explanation Answer: A) Sodium Carbonate

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The credit for classifying the elements on the basis of their atomic masses goes to

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___ is amphoteric in nature.

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Answer & Explanation Answer: C) ZnO

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