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Question 1
Consider the following
1) Synthetic elements are created by human.
2) Most of the synthetic elements are located in 7th group of the periodic table.
3) The atoms of some synthetic elements now present on Earth are products of atomic bombs.
Which of the following is/are true about synthetic element?
Question 2
Consider the following statements and select the correct code.
Assertion (A): In the periodic table of chemical elements, from top to bottom in a group electron affinity will always increase.
Reason (R): The atomic radii generally increase from top to bottom in a group.
Question 3
Which one of the following is not a periodic property i.e. does not show any trend on moving from one side to the other in the periodic table ?
Question 4
How many elements are there in the 5th period of the modern periodic table?
Question 5
Which has the highest electron affinity–
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Dec 12CDS & Defence
