← Back to Chemistry-I

Classification of Elements and Periodicity in Properties

571 Questions Start Errorless Test
All Exams Errorless Allen
DCE 1999 Q226 Errorless Extended or long form of periodic table MCQ
Whose name is not associated with the development of Periodic Table
A.
Prout's
B.
Newlands
C.
Rutherford
D.
Loother Meyer
AIIMS 1999; CPMT 1999 Q227 Errorless Atomic and Ionic radii MCQ
The radii of $F, F^{-}, O$ and $O^{-2}$ are in the order of
A.
$O^{2-} > F^{-} > O > F$
B.
$O^{2-} > F^{-} > F > O$
C.
$F^{-} > O^{2-} > F > O$
D.
$O^{2-} > O > F^{-} > F$
AFMC 1999; Pb. PMT 2002; BHU 2003 Q228 Errorless Atomic and Ionic radii MCQ
Which of the following has the largest ionic radius
A.
$Na^{+}$
B.
$Ni^{+}$
C.
$Cs^{+}$
D.
$Mg^{+2}$
AIIMS 1999 Q229 Errorless Atomic and Ionic radii MCQ
Assertion : Positive ions will be wider than parent atoms. Reason : Nuclear charge pulls them closer.
A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.
If assertion is true but reason is false.
D.
If the assertion and reason both are false.
E.
If assertion is false but reason is true.
AIIMS 1999 Q230 Errorless Atomic and Ionic radii MCQ
Assertion : The atomic radii of calcium is smaller than sodium. Reason : Calcium has a lower nuclear charge than sodium.
A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.
If assertion is true but reason is false.
D.
If the assertion and reason both are false.
E.
If assertion is false but reason is true.
CPMT 1999; CBSE PMT 2001 Q231 Errorless Ionisation Energy MCQ
Which of the order for ionisation energy is correct.
A.
Be > B > C > N > O
B.
B < Be < C < O < N
C.
B < Be < C < N < O
D.
B < Be < N < C < O
AIIMS 1999 Q232 Errorless Ionisation Energy MCQ
Hydrogen has high ionisation energy than alkali metals, due to its
A.
Large size
B.
Small size
C.
Ionic bond
D.
Covalent bond
CPMT 1999 Q233 Errorless Ionisation Energy MCQ
Which of the following relation is correct with respect to first (I) and second (II) ionisation potentials of sodium and magnesium
A.
$I_{Mg} = II_{Na}$
B.
$I_{Na} > I_{Mg}$
C.
$II_{Mg} > II_{Na}$
D.
$II_{Na} > II_{Mg}$
AFMC 1999; Kerala PET 2002; Odisha JEE 2004, 05; MP PET 2008; MP PMT 2013 Q234 Errorless Electron affinity MCQ
Order of electron affinity of F, Cl, Br and I is ....
A.
F < Cl > Br > I
B.
F > Cl > Br > I
C.
F < Cl < Br < I
D.
F > Cl < Br > I
AFMC 1999 Q235 Errorless Valency and oxidation state MCQ
Which of the following set has the strongest tendency to form anions
A.
Ga, In and Te
B.
Na, Mg and Al
C.
N, O and F
D.
V, Cr and Mn
MP PET 1999 Q236 Errorless Valency and oxidation state MCQ
Which of the following metals exhibits more than one oxidation state
A.
Na
B.
Mg
C.
Fe
D.
Al
RPET 1999 Q237 Errorless Valency and oxidation state MCQ
Which of the following elements is found in native state
A.
Al
B.
Au
C.
Cu
D.
Na
RPET 1999 Q238 Errorless Valency and oxidation state MCQ
The basis of keeping the elements in the group of a periodic table is
A.
Ionisation potential
B.
Electronegativity
C.
Electron affinity
D.
Number of electrons in the valence shell
DCE 1999, 2007 Q239 Errorless Valency and oxidation state MCQ
An element 'X' which occurs in the first short period has an outer electronic structure $s^2 p^1$ . What is the formula and acid-base character of its oxides
A.
$XO_3$ , basic
B.
$X_2O_3$ , basic
C.
$X_2O_3$ , acidic
D.
$XO_2$ acidic
KCET (Med.) 1999 Q240 Errorless Valency and oxidation state MCQ
Fluorine, chlorine, bromine and iodine are placed in the same group (17) of the periodic table, because
A.
They are non-metals
B.
They are electronegative
C.
Their atoms are generally univalent
D.
They have 7 electrons in the outermost shell of their atom
IIT JEE 1999 Q241 Errorless Critical Thinking MCQ
Ionic radii of
A.
$Ti^{4+} < Mn^{7+}$
B.
$^{35}Cl^{-} < ^{37}Cl^{-}$
C.
$K^{+} > Cl^{-}$
D.
$P^{3+} > P^{5+}$
AIIMS 1998 Q242 Errorless Extended or long form of periodic table MCQ
Which of the following elements are analogous to the lanthanides
A.
Actinides
B.
Borides
C.
Carbides
D.
Hydrides
Kurukshetra CEE 1998; AFMC 2000 Q243 Errorless Extended or long form of periodic table MCQ
Which of the following pair has elements containing same number of electrons in the outermost orbit
A.
N, O
B.
Na, Ca
C.
As, Bi
D.
Pb, Sb
MP PET/PMT 1998 Q244 Errorless Extended or long form of periodic table MCQ
In the periodic table, the element with atomic number 16 will be placed in the group
A.
Third
B.
Fourth
C.
Fifth
D.
Sixth
CET Pune 1998 Q245 Errorless Extended or long form of periodic table MCQ
The electronic structure $(n-1)d^{1-10}ns^{0-2}$ is characteristic of
A.
Transition elements
B.
Lanthanides
C.
Actinides
D.
Rare gases
CBSE PMT 1998 Q246 Errorless Ionisation Energy MCQ
The first ionisation potentials (eV) of Be and B respectively are
A.
8.29eV, 9.32eV
B.
9.32eV, 9.32eV
C.
8.29eV, 8.29eV
D.
9.32eV, 8.29eV
CET Pune 1998; AFMC 2001; BVP 2003 Q247 Errorless Ionisation Energy MCQ
Ionisation energy is highest for
A.
Noble gases
B.
Platinum metals
C.
Transition elements
D.
Inner-transition elements
Pune CET 1998 Q248 Errorless Ionisation Energy MCQ
Which ionisation potential (IP) in the following equations involves the greatest amount of energy
A.
$Na \rightarrow Na^{+} + e^{-}$
B.
$K^{+} \rightarrow K^{2+} + e^{-}$
C.
$C^{2+} \rightarrow C^{3+} + e^{-}$
D.
$Ca^{+} \rightarrow Ca^{2+} + e^{-}$
Kurukshetra CEE 1998; MP PMT 2002; MP PET 2011 Q249 Errorless Electron affinity MCQ
The electron affinity for the inert gases is
A.
Zero
B.
High
C.
Negative
D.
Positive
AIIMS 1998 Q250 Errorless Electronegativity MCQ
Which of the following is the most electropositive element
A.
Aluminium
B.
Magnesium
C.
Phosphorus
D.
Sulphur