EASY
Earn 100

Consider the following statements

I. The radius of an anion is larger than that of the parent atom.

II. The ionization energy generally increases with increasing atomic number in a period.

III. The electronegativity of elements increases on moving down across a group

Which of the above statements is - are correct?

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Important Questions on Classification of Elements - the Periodic Table

MEDIUM
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
Which of the following represents the correct order of increasing first ionization enthalpy for Ca, Ba, S, Se and Ar ?
EASY
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
When the first electron gain enthalpy (ΔHeg) of oxygen is -141 kJ/mol , its second electron gain enthalpy is:
EASY
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
The first ionisation potential of Na is 5.1 eV. The value of electron gain enthalpy of Na + will be :
EASY
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
The electronic configuration with the highest ionization enthalpy is:
EASY
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
For Na+, Mg2+, F- and O2-, the correct order of increasing ionic radii is:
EASY
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
Which element has the highest first ionization potential?
EASY
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
The correct order of atomic radii is:
MEDIUM
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
The size of the iso-electronic species Cl- , Ar and Ca2+ is affected by:
EASY
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
In general, the properties that decrease and increase down a group in the periodic table, respectively, are :
MEDIUM
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
The ionic radii (in  Å) of N3-, O2-  and  F-  are respectively:
MEDIUM
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
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
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
The correct order of atomic radii in group 13 elements is
MEDIUM
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
Which one of the following has largest ionic radius ?
EASY
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
The species Ar, K+ and Ca2+  contain the same number of electrons. In which order do their radii increase?
EASY
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
Which of the following atoms has the highest first ionization energy?
MEDIUM
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
In comparison to boron, beryllium has:
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Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
For the second period elements the correct increasing order of first ionization enthalpy is:
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Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
In which of the following options the order of arrangement does not agree with the variation of property indicated against it?
EASY
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
Identify the element that forms amphoteric oxide:
HARD
Science>Chemistry>Classification of Elements - the Periodic Table>Periodic Properties of the Elements in the Modern Table
The option(s) with only amphoteric oxides is(are):