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Class XI Chemistry Classification of Elements 2

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Question 1

The first ionisation energy of Ar is less than that of Ne. An explanation of this fact is that

Question 2

Which of the following sets of elements have almost same atomic radii.

Question 3

Which of the following has the least ionic radius?

Question 4

The increasing order of the first ionization enthalpies of the elements B, P, S and F (lowest first) is

Question 5

The ionic radii (in Å) of N^3-, O^2- and F^- are respectively :

Question 6

According to the peridoic law of elements the variatiion in properties of elements is related to their

Question 7

The increasing order of the ionic radii of the given isoelectronic species is :

Question 8

Which of the following represents the correct order of increasing first ionization enthalpy for Ca, Ba, S, Se and Ar?

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Nov 6JEE & BITSAT