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Discuss the trend of electrical conductivity down the group in a periodic table.

Important Questions on Periodicity

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Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
The acidic oxide from below is:
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Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
The first ionization energy of magnesium is smaller, as compared to that of elements X and Y, but higher than that of Z. The elements X, Y and Z, respectively, are :
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Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
Which among the following structures does not correctly represent the bonding capacities (valancies) of the atoms involved ?
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Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties

Given below are the oxides :

Na2O,As2O3,N2O,NO and Cl2O7 Number of amphoteric oxides is :

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Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
The acidic, basic and amphoteric oxides, respectively, are
EASY
Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
Maximum co-valency of phosphorus can be
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Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
The general formula of the compounds formed when group 13 elements (A) reacts with group 16 elements (B) is
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Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
In comparison to boron, beryllium has:
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Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
Three elements X,Y and Z are in the 3rd period of the periodic table. The oxides ofX,Y and Z, respectively, are basic, amphoteric and acidic. The correct order of the atomic numbers of X, Y and Z is:
EASY
Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
Which among the following oxides is the most basic?
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Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
The correct decreasing order for metallic character is
HARD
Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
The option(s) with only amphoteric oxides is(are):
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Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
The correct order of decreasing acidic nature of oxides
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Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
Discuss Abnormals behaviour of Nitrogen.
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Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
Total number of acidic oxides among N2O3,NO2, N2O,Cl2O7,SO2,CO,CaO,Na2O and NO is _____ .
EASY
Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
The correct order of energy of 2s-orbitals in H, Li, Na and K, is
 
EASY
Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
Be and Al show similarities in properties due to the diagonal relationship except in the property X given below. What is X?
HARD
Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
B has a smaller first ionization enthalpy than Be. Consider the following statement:
(I) it is easier to remove 2p electron than2s  electron
(II) 2p electron of B is more shielded from the nucleus by the inner core of electrons than the 2s electrons of Be
(III) 2s electron has more penetration power than 2p electron
(IV) atomic radius of B is more than Be
(atomic number B:5, Be=4 )
The correct statements are.
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Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
In the following sets of reactants which two sets best exhibit the amphoteric character of Al2O3 . xH2O ?

Set I Al 2 O 3 · xH 2 O s + OH aq - Set II Al 2 O 3 x · H 2 O s + H 2 O l Set III Al 2 O 3 x · H 2 O s + H aq + Set IV Al 2 O 3 · xH 2 O s + NH 3 aq
EASY
Chemistry>Inorganic Chemistry>Periodicity>Periodicity of Physical Properties
The transition metal oxides which are amphoteric in nature are: