Chemical Periodicity Test 3

Total Questions:50 Total Time: 75 Min

Remaining:

 

Questions 1 of 50

Question:The element with quantum numbers \(n = 2,l = 1,m = 1,s = - 1/2\) has the following position in the periodic table

Answers Choices:

Group VII-A, period II

Group 0, period II

Group VII-A, period III

Group 0, period III

Questions 2 of 50

Question:Who developed the long form of periodic table

Answers Choices:

Lothar Meyer

Niels Bohr

Mendeleef

Moseley

Questions 3 of 50

Question:Elements of atomic number 6 is placed in

Answers Choices:

IV group

IV period

VI group

III group

Questions 4 of 50

Question:Which of the following elements is a lanthanide (Rare–earth element)

Answers Choices:

Cadmium

Californium

Cerium

Cesium

Questions 5 of 50

Question:Which of the following dinegative anion is quite common

Answers Choices:

\({S^{2 - }}\)

\(S{e^{2 - }}\)

\(T{e^{2 - }}\)

\({O^{2 - }}\)

Questions 6 of 50

Question:An element has electronic configuration \(1{s^2}2{s^2}2{p^6}3{s^2}3{p^4}\). Predict their period, group and block

Answers Choices:

Period = 3rd, block = p, group = 16

Period = 5th, block = s, group = 1

Period = 3rd, block = p, group = 10

Period = 4th, block = d, group = 12

Questions 7 of 50

Question:Mosley's name is most closely associated with the discovery of

Answers Choices:

Positron

Deutrons

Atomic number

Atomic weight

Questions 8 of 50

Question:In the periodic table going down in fluorine group

Answers Choices:

Reactivity will increase

Electronegativity will increase

Ionic radius will increase

Ionization potential will increase

Questions 9 of 50

Question:Alkali metals in each period have

Answers Choices:

Smallest size

Lowest ionization potential

Highest ionization potential

Highest electronegativity

Questions 10 of 50

Question:The elements on the right side of the periodic table are

Answers Choices:

Metals

Metalloids

Non-metals

Transition elements

Questions 11 of 50

Question:Who is called the father of chemistry

Answers Choices:

Faraday

Priestley

Rutherford

Lavosier

Questions 12 of 50

Question:The total number of rare–earth elements is

Answers Choices:

8

32

14

10

Questions 13 of 50

Question:To which block is related an element having electronic configuration \(1{s^2}2{s^2}2{p^6}3{s^2}3{p^6}3{d^{10}}4{s^1}\) in the periodic table

Answers Choices:

s – block

p – block

d – block

f – block

Questions 14 of 50

Question:\(Ce - 58\) is a member of

Answers Choices:

s-block elements

p-block elements

d-block elements

f-block elements

Questions 15 of 50

Question:The nitride ion in lithium nitride is composed of

Answers Choices:

\(7P + 7e\)

\(10P + 7e\)

\(7P + 10e\)

\(10P + 10e\)

Questions 16 of 50

Question:Which set has the same number of unpaired electrons in their ground state

Answers Choices:

\(C{l^ - },F{e^{3 + }},C{r^{3 + }}\)

\(N{a^ + }\), \(M{g^{2 + }}\), \(Al\)

\(Na,\,P,\,\,Cl\)

\(N,\,P,V\)

Questions 17 of 50

Question:Of the following, the one with largest size is

Answers Choices:

\(C{l^ - }\)

\(Ar\)

\({K^ + }\)

\(C{a^{2 + }}\)

Questions 18 of 50

Question:Which cation has smallest radius

Answers Choices:

\({K^ + }\)

\(N{a^ + }\)

\(L{i^ + }\)

\(B{e^{2 + }}\)

Questions 19 of 50

Question:In \({K^ + }{F^ - }\) ionic radius of \({F^ - }\) is more while atomic radius of \({K^ + }\) is

Answers Choices:

Less than \({F^ - }\)

More than \({F^ - }\)

Equal of \({F^ - }\)

None of these

Questions 20 of 50

Question:Which one of the following species possesses maximum size

Answers Choices:

\(N{a^ + }\)

\({F^ - }\)

\(Ne\)

\({O^{2 - }}\)

Questions 21 of 50

Question:Which statement is correct

Answers Choices:

For potassium, the atomic radius < ionic radius; but for bromine, the atomic radius > ionic radius

For potassium and bromine both, the atomic radii > ionic radii

For potassium and bromine both, the atomic radii < ionic radii

For potassium, the atomic radius > ionic radius but for bromine, the atomic radius < ionic radius

Questions 22 of 50

Question:Which of the following ion is the smallest ion

Answers Choices:

\(O_2^ + \)

\(O_2^ - \)

\({O_2}\)

\(O_2^{ - 2}\)

Questions 23 of 50

Question:An atom of an element has electronic configuration 2, 8, 1. Which of the following statement is correct

Answers Choices:

The element's valency is 7

The element exists as a diatomic molecule

The element is of non-metallic nature

The element forms a basic oxide

Questions 24 of 50

Question:Which of the following ions has the smallest radius

Answers Choices:

\(B{e^{2 + }}\)

\(L{i^ + }\)

\({O^{2 - }}\)

\({F^ - }\)

Point out the wrong statement :

Questions 25 of 50

Question:Ionic radii are

Answers Choices:

Directly proportional to effective nuclear charge

Directly proportional to square of effective nuclear charge

Inversely proportional to effective nuclear charge

Inversely proportional to square of effective nuclear charge.

Questions 26 of 50

Question:Correct energy value order is

Answers Choices:

\(ns\;np\;nd(n - 1)f\)

\(ns\;np(n - 1)d\;(n - 2)f\)

\(ns\;np(n - 1)d\;(n - 1)f\)

\(ns(n - 1)d\;n(n - 1)f\)

Questions 27 of 50

Question:Which of the following element has maximum, first ionisation potential

Answers Choices:

V

Ti

Cr

Mn

Questions 28 of 50

Question:Highest energy will be absorbed to eject out the electron in the configuration

Answers Choices:

\(1{s^2}2{s^2}2{p^1}\)

\(1{s^2}2{s^2}2{p^3}\)

\(1{s^2}2{s^2}2{p^2}\)

\(1{s^2}2{s^2}2{p^4}\)

Questions 29 of 50

Question:Which of the following elements has the lowest ionistion potential

Answers Choices:

N

O

F

Ne

Questions 30 of 50

Question:Which of the following has lowest first ionisation potential

Answers Choices:

B

C

N

O

Questions 31 of 50

Question:Which of the following order is wrong

Answers Choices:

\(N{H_3} < P{H_3} < As{H_3}\)-acidic nature

\(L{i^ + } < N{a^ + } < {K^ + } < C{s^ + }\)-ionic radius

\(A{l_2}{O_3} < MgO < N{a_2}O < {K_2}O\)-basic

\(Li < Be < B < C\)-1st ionisation potential

Questions 32 of 50

Question:Which of the following has the least ionization potential

Answers Choices:

Lithium (Li)

Helium (He)

Nitrogen (N)

Zinc (Zn)

Questions 33 of 50

Question:Which of the following species has lowest ionization potential

Answers Choices:

\(O\)

\({O_2}\)

\(O_2^ + \)

\(O_2^ - \)

Questions 34 of 50

Question:Which of the following has minimum ionization energy

Answers Choices:

Ge

Se

As

Br

Questions 35 of 50

Question:If the IP of \(Na\) is 5.48 eV, the ionisation potential of \(K\) will be

Answers Choices:

Same as that of \(Na\)

5.68 eV

4.34 eV

10.88 eV

Questions 36 of 50

Question:Mg and Li are similar in their properties due to

Answers Choices:

Same e/m ratio

Same electron affinity

Same group

Same ionic potential

Questions 37 of 50

Question:The electron affinity for the inert gases is

Answers Choices:

Zero

High

Negative

Positive

Questions 38 of 50

Question:The electron affinities of halogens are \(F = 322\), \(Cl = 349\), \(Br = 324\), \(I = 295kJ\,mo{l^{ - 1}}\). The higher value for \(Cl\) as compared to that of \(F\) is due to

Answers Choices:

Weaker electron-electron repulsion in \(Cl\)

Higher atomic radius of \(F\)

Smaller electronegativity of \(F\)

More vacant P - subshell in \(Cl\)

Questions 39 of 50

Question:Electron affinity is the lowest for

Answers Choices:

Nitrogen

Carbon

Oxygen

Sulphur

Questions 40 of 50

Question:Which one of the elements has the maximum electron affinity

Answers Choices:

F

Cl

Br

I

Questions 41 of 50

Question:Keeping in view the periodic law and the periodic table suggest which of the following elements should have the maximum electronegative character

Answers Choices:

P

As

Bi

Sb

Questions 42 of 50

Question:The outermost electronic configuration of the most electronegative element is

Answers Choices:

\(n{s^2}n{p^3}\)

\(n{s^2}n{p^4}\)

\(n{s^2}n{p^5}\)

\(n{s^2}n{p^6}\)

Questions 43 of 50

Question:The attraction that an atom exerts on a pair of electrons that are being shared between that atom and another atom to which it is bonded by a covalent bond is referred to as its

Answers Choices:

Electron affinity

Electronegativity

Ionisation energy

Valence

Questions 44 of 50

Question:The electronegativity of the following elements increases in the order

Answers Choices:

C, N, Si, P

N, Si, C, P

Si, P, C, N

P, Si, N, C

Questions 45 of 50

Question:The order in which the following oxides are arranged according to decreasing basic nature is

Answers Choices:

\(N{a_2}O,\,MgO,\,A{l_2}{O_3},\,CuO\)

\(MgO,\,A{l_2}{O_3},\,CuO,\,N{a_2}O\)

\(A{l_2}{O_3},\,MgO,\,CuO,\,N{a_2}O\)

\(CuO,\,N{a_2}O,\,MgO,\,A{l_2}{O_3}\)

Questions 46 of 50

Question:Strongest reducing agent is

Answers Choices:

\(C{l_2}\)

\(C{l^ - }\)

\(B{r^ - }\)

\({I^ - }\)

Questions 47 of 50

Question:The correct order of reactivity of halogen is

Answers Choices:

Flourine > bromine > chlorine > iodine

Flourine > chlorine > bromine > iodine

Iodine > bromine > chlorine > fluorine

Bromine > chlorine > flourine > iodine

Questions 48 of 50

Question:Elements A and B with their respective electronic configurations \(3{d^{10}}\,4{s^1}\) and \(4{d^{10}}\,5{s^1}\) in their outermost shell are

Answers Choices:

Both non-metals

Both coinage metals

A is a non-metal and B is coinage metal

A is a coinage metal and B is non-metal

Questions 49 of 50

Question:Which of the following electronic configurations in the outermost shell is characteristic of alkali metals

Answers Choices:

\((n - 1)\,{s^2}{p^6},\,n{s^2}{p^1}\)

\((n - 1)\,{s^2}{p^6}{d^{10}},\,n{s^1}\)

\((n - 1)\,{s^2}{p^6},\,n{s^1}\)

\(n{s^2}{p^6}{d^1}\)

Questions 50 of 50

Question:On moving down the group gradually increase

Answers Choices:

Oxidising property

Electronegativity

Acidic property

Metallic property