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Classification of Elements and Periodicity in Properties

301 Questions Start Errorless Test
All Exams Errorless
AIIMS 1999 Q176 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 Q177 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.
AIIMS 1999 Q178 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
MP PET 1999 Q179 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 Q180 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 Q181 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
KCET (Med.) 1999 Q182 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 Q183 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 Q184 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 Q185 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 Q186 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 Q187 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 Q188 Errorless Ionisation Energy MCQ
The first ionisation potentials (eV) of Be and B respectively are
A.
$8.29\mathrm{eV}$ , $9.32\mathrm{eV}$
B.
$9.32\mathrm{eV}$ , $9.32\mathrm{eV}$
C.
$8.29\mathrm{eV}$ , $8.29\mathrm{eV}$
D.
$9.32\mathrm{eV}$ , $8.29\mathrm{eV}$
CET Pune 1998; AFMC 2001; BVP 2003 Q189 Errorless Ionisation Energy MCQ
Ionisation energy is highest for
A.
Noble gases
B.
Platinum metals
C.
Transition elements
D.
Inner-transition elements
Kurukshetra CEE 1998; MP PMT 2002; MP PET 2011 Q190 Errorless Electron Affinity MCQ
The electron affinity for the inert gases is
A.
Zero
B.
High
C.
Negative
D.
Positive
MP PET/PMT 1998 Q191 Errorless Electronegativity MCQ
Which element has the highest electronegativity
A.
C
B.
Mg
C.
O
D.
S
CBSE PMT 1998 Q192 Errorless Valency and Oxidation State MCQ
Which of the following elements shows maximum number of different oxidation states in its compounds
A.
$Eu$
B.
$La$
C.
$Gd$
D.
$Am$
IIT JEE 1998 Q193 Errorless JEE Section MCQ
Statement 1 : LiCl is predominantly a covalent compound. Statement 2 : Electronegativity difference between Li and Cl is too small.
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.
IIT JEE 1998 Q194 Errorless JEE Section MCQ
Statement 1 : F atom has a less negative electron affinity than Cl atom. Statement 2 : Additional electrons are repelled more effectively by $3p$ electrons in $Cl$ atom than by $2p$ electrons in $F$ atom.
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.
RPMT 1997; EAMCET 1998 Q195 Errorless Extended or Long Form of Periodic Table MCQ
As per the modern periodic law, the physical and chemical properties of elements are periodic functions of their
A.
Atomic volume
B.
Electronic configuration
C.
Atomic weight
D.
Atomic size
MP PET 1997 Q196 Errorless Extended or Long Form of Periodic Table MCQ
Who developed the long form of periodic table
A.
Lothar Meyer
B.
Niels Bohr
C.
Mendeleev
D.
Moseley
EAMCET 1997; BHU 1999 Q197 Errorless Atomic and Ionic Radii MCQ
Of the following, the one with largest size is
A.
$Cl^{-}$
B.
Ar
C.
$K^{+}$
D.
$Ca^{2+}$
MP PET 1997 Q198 Errorless Atomic and Ionic Radii MCQ
The atomic radius of elements of which of the following series would be nearly the same
A.
Na K Rb Cs
B.
Li Be B C
C.
Fe Co Ni Cu
D.
F Cl Br I
JIPMER 1997; CPMT 1997; AIIMS 2000 Q199 Errorless Ionisation Energy MCQ
Which of the following gaseous atoms has highest value of IE
A.
P
B.
Si
C.
Mg
D.
Al
RPMT 1997; DCE 1999; BHU 2006 Q200 Errorless Ionisation Energy MCQ
The ionisation energy of nitrogen is larger than that of oxygen because of
A.
Greater attraction of electrons by the nucleus
B.
The size of nitrogen atom being smaller
C.
The half-filled $p$ -orbitals possess extra stability
D.
Greater penetration effect