On account of the disruption in education due to the corona pandemic, we're opening up our platform for teachers, free of cost. Know More →

Class 10

Explore popular questions from Periodic Classification of Elements for Class 10. This collection covers Periodic Classification of Elements previous year Class 10 questions hand picked by experienced teachers.

Periodic Classification of Elements

Correct Marks 1

Incorrectly Marks 0

Q 1. Which among the following elements have lowest value of {tex}\mathrm{IE_1}{/tex}?

Pb

B

Sn

C

Si

D

C

Correct Marks 1

Incorrectly Marks 0

Q 2. The number of periods and group in the long form of periodic table are respectively

A

7 and 9

B

8 and 18

7 and 18

D

6 and 10

Correct Marks 1

Incorrectly Marks 0

Q 3. The elements which are characterised by the outer shell configurations {tex}\mathrm{ns^1}{/tex} to {tex}\mathrm{ns^2} {/tex} and {tex}\mathrm{ns^2p^1}{/tex} to {tex}\mathrm{ns^2p^5}{/tex} are collectively called

A

Transition elements

Representative elements

C

Lanthanides

D

Inner transition elements

Correct Marks 1

Incorrectly Marks 0

Q 4. With reference to concept of ionisation potential , which one of the following sets is correct?

A

U > K > Cs

Na > K > Cs

C

Cs > U > B

D

Cs < U < K

Correct Marks 1

Incorrectly Marks 0

Q 5. Compared to the first ionisation, the value of second ionisation potential of an element is

A

negligible

B

smaller

greater

D

double

Correct Marks 1

Incorrectly Marks 0

Q 6. The ionisation energy decreases in moving down a group. This is due to

A

increase in nuclear charge

B

increase in atomic size and nuclear charge

C

increase in nuclear charge and decrease in shielding effect

increase in atomic size and also shielding effect

Correct Marks 1

Incorrectly Marks 0

Q 7. Which of the following statements concerning ionisation energy is not correct?

A

The second ionisation energy is always more than the first

Within a group, there is a gradual increase in ionisation energy because of nuclear charge

C

Ionisation energies of the Be is more than B

D

Ionisation energies of noble gases are high.

Correct Marks 1

Incorrectly Marks 0

Q 8. {tex}\mathrm{r_{(van\ der\ Waal)}}{/tex} is

A

half the bond length

B

twice the bond length

half the distance between centres of nuclei of two non bonded atoms of adjacent molecules

D

none of these

Correct Marks 1

Incorrectly Marks 0

Q 9. The size of the species {tex}\mathrm{Cl}{/tex}, {tex}\mathrm{Cl^-}{/tex} and {tex}\mathrm{Cl^+}{/tex} decreases as

A

{tex}\mathrm {Cl} {/tex} > {tex}\mathrm{Cl^+}{/tex}> {tex}\mathrm{Cl^-}{/tex}

B

{tex}\mathrm {Cl^+} {/tex} > {tex}\mathrm{Cl^-}{/tex}> {tex}\mathrm{Cl}{/tex}

C

{tex}\mathrm {Cl^-} {/tex} > {tex}\mathrm{Cl^+}{/tex}> {tex}\mathrm{Cl}{/tex}

{tex}\mathrm {Cl^-} {/tex} > {tex}\mathrm{Cl}{/tex}> {tex}\mathrm{Cl^+}{/tex}

Correct Marks 1

Incorrectly Marks 0

Q 10. The ions which are arranged in correct order of increasing radii are

A

{tex}\mathrm{K^+}{/tex}, {tex}\mathrm{Ca^{2+}}{/tex}, {tex}\mathrm{S^{2-}}{/tex}

{tex}\mathrm{Be^{2+}}{/tex}, {tex}\mathrm{Mg^{2+}}{/tex}, {tex}\mathrm{Na^{+}}{/tex}

C

{tex}\mathrm{O^{2-}}{/tex}, {tex}\mathrm{F^{-}}{/tex}, {tex}\mathrm{N^{3-}}{/tex}

D

{tex}\mathrm{S^{2-}}{/tex}, {tex}\mathrm{O^{2-}}{/tex}, {tex}\mathrm{As^{3-}}{/tex}

Correct Marks 1

Incorrectly Marks 0

Q 11. The size of following species increases in the order

{tex}\mathrm{Mg^{2+}}{/tex}< {tex}\mathrm{Na^{+}}{/tex}<{tex}\mathrm{F^-}{/tex} <{tex}\mathrm {Al}{/tex}

B

{tex}\mathrm{F^-}{/tex}< {tex}\mathrm {Al}{/tex}< {tex}\mathrm{Na^{+}}{/tex}< {tex}\mathrm{Mg^{2+}}{/tex}

C

{tex}\mathrm{Al}{/tex}< {tex}\mathrm{Mg^{2+}}{/tex}< {tex}\mathrm{F^{-}}{/tex}< {tex}\mathrm{Na^{+}}{/tex}

D

{tex}\mathrm{Na^{+}}{/tex}< {tex}\mathrm {Al}{/tex} < {tex}\mathrm{F^{-}}{/tex}< {tex}\mathrm{Mg^{2+}}{/tex}

Correct Marks 1

Incorrectly Marks 0

Q 12. The correct order of ionic radii for the ions {tex}\mathrm{S^{2-}. Cl^{-}, P^{3-}, Ca^{2+}}{/tex} is

A

{tex}\mathrm{Ca^{2+} > Cl^- > S^{2-} > P^{3-}}{/tex}

B

{tex}\mathrm{S^{2-} > P^{3-} > Cl^{-} > Ca^{2+}}{/tex}

C

{tex}\mathrm{P^{3-} > S^{2-} > Cl^{-} > Ca^{2+}}{/tex}

{tex}\mathrm{Ca^{2+} > Cl^{-} > S^{2-} > P^{3-}}{/tex}

Correct Marks 1

Incorrectly Marks 0

Q 13. The anion {tex}\mathrm{O^{2-}}{/tex} is iso-electronic with

A

{tex}\mathrm {{F^+}}{/tex}

B

{tex} \mathrm {N^{2-}}{/tex}

{tex} \mathrm {F^{-}}{/tex}

D

{tex} \mathrm {N^{3+}}{/tex}

Correct Marks 1

Incorrectly Marks 0

Q 14. For an element with configuration {tex}\mathrm{5s^24d^{10}5p^3}{/tex}, the chemistry is likely to be similar to that of

A

boron

B

oxygen

C

chlorine

phosphorus

Correct Marks 1

Incorrectly Marks 0

Q 15. Which of the follwoing elements has zero electron affinity?

A

Na

Ne

C

F

D

none of these

Correct Marks 1

Incorrectly Marks 0

Q 16. The correct order of electron affinity of halogens is

A

F > Cl > Br > I

B

I > Br > Cl > F

Cl > F > Br > I

D

Cl > F < Br < I

Correct Marks 1

Incorrectly Marks 0

Q 17. Outer most configuration of most electronegative element of the periodic table is

A

{tex}3s^23p^6{/tex}

{tex}2s^22p^5{/tex}

C

{tex}4s^24p^5{/tex}

D

{tex}2s^22p^4{/tex}

Correct Marks 1

Incorrectly Marks 0

Q 18. Diagonal relationship is shown by

A

all elements with their diagonally opposite elements

B

all elements of 3rd and 4th periods

some of the elements of 2nd and 3rd periods

D

elements of d-block

Correct Marks 1

Incorrectly Marks 0

Q 19. Which of the following pairs show diagonal relationship?

A

N, P

B

N, O

C

N, S

None of these

Correct Marks 1

Incorrectly Marks 0

Q 20. The ionisation energy of an atom is the energy

A

needed to add an electron to an atom

B

needed to transfer an electron from one orbit to another

C

needed to convert the atom into a radioactive isotope

just enough to cause the electron to escape from the isolated atom

Correct Marks 1

Incorrectly Marks 0

Q 21. The maximum tendency to form the gaseous unipositive ion is for the element with configuration

A

{tex}1s^22s^22p^63s^2{/tex}

{tex}1s^22p^63s^1{/tex}

C

{tex}1s^22s^22p^63s^23p^2{/tex}

D

{tex}1s^22s^22p^63s^23p^3{/tex}

Correct Marks 1

Incorrectly Marks 0

Q 22. In the periodic table, with the increase in the atomic number, the metallic character of the element

decreases in a period and increases in a group

B

increases in a period and decreases in a group

C

increases both in a period and a group

D

decreases both in a period and a group

Correct Marks 1

Incorrectly Marks 0

Q 23. Amongst the following electronic configuration which one will have highest electron affinity?

A

{tex}1s^1{/tex}

B

{tex}1s^22s^1{/tex}

C

{tex}1s^22s^22p^4{/tex}

{tex}1s^22s^22p^5{/tex}

Correct Marks 1

Incorrectly Marks 0

Q 24. With which of the following configuration the lowest value of first IE is associated

{tex}1s^22s^22p^63s^1{/tex}

B

{tex}1s^22s^22p^5{/tex}

C

{tex}1s^22s^22p^6{/tex}

D

{tex}1s^22s^22p^63s^22p^2{/tex}

Correct Marks 1

Incorrectly Marks 0

Q 25. In the long form of the periodic table, the transition metals are placed in

A

s-block

B

f-block

d-block

D

s and p-block