chemistry

EAMCET PREVIOUS PAPER QUESTIONS FORM PERIODIC TABLE PART-1

1.Which pair of atomic numbers represents elements which are both S-block element

a)7,15

b)6,12

c)9,17

d)3,12

2. Which indicates the correct variation in electronegativities

a)F>N<O>C

b) F<N<O<C

c) F>N>O>C

d) F>N>O<C

3. The first ionization energy of lithium will be

a) greater than beryllium

b)lesser to beryllium

c) equal to sodium

d) equal to fluorine

4. Among alkali metals, the metal with the highest I.P is

a)Li

b)Na

c)K

d)Cs

5. In the long form of periodic table the elements having lowest I.P’s are present in

a) 1^St group

b)4^Th group

c) 6^Th group

d) Zero group

6.Al³⁺ has a lower ionic radius than Mg²⁺ion because

a)Mg atom has less no.of neutrons than Al.

b) Al³⁺ has a higher nuclear charge than Mg²⁺

c)Their electronegativities are different

d) Al has a lower ionization potential than Mg

7. The most electronegative element is

a) Cl

b) F

c) Cs

d) Fr

8. When compared to ‘2s’ electron, I.P of ‘1s’ electron is

a) less

b) more

c)same

d) canot be said

9. As we go from left to right in a period, the effective nuclear charge

a) increases

b) decreases

c) remains the same

d) canot be said

10. Ionic radii (M³⁺) of Lanthanide ions gradually decreases. This is called as

a) inert pair effect

b) lanthanide contraction

c) actomode cpmtraction

d) none of these