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WorksheetsPeriodic classification of elements and their trends
Total questions: 17
Worksheet time: 24mins
The second ionisation energy order is correct for which of the following
O > N
N > O
Na<N
Na<O
Choose the correct statement(s) among the following about d block elements:
They have non varying oxidation states
They form catalysts
They form interstitial hydrides
They form coloured compounds often
There is an increase in +2 oxidation state stability when we move along a group. Name the effect which causes this.
(a)
Which of the following elements is not in its ground state?
[Ar] 3d10 4s1
[Ar] 3d5 4s1
[He] 2s2 2p3
[He] 2s1 2p3
The following factor is greater for Ca and lower for Na
IE2
IE1
Ionic radii
e/p ratio
Whose work gave idea that classification of elements should not be done on the basis of atomic mass/weight?
Hysenberg
Moseley
Rutherford
Mendeleev
Name the element which is a metal and liquid at room temperature.
(a)
Ca2+ is smaller than K+ because
High nuclear charge
Inert pair effect
Less no. of protons more will be the IE
None of the above
The Ionisation energy and Acidity _______________ and ___________________ along a group.
increases, decreases
decreases, remains same
remains same, increases
decreases, increases
Element X forms a chloride with the formula XCl2, which is a solid with a high melting point.
X would most likely be in the same group of the periodic table as ___________
Na
Mg
Al
Si
When Mg burns in air compounds of magnesium formed are magnesium oxide and
Magnesium nitride
Magnesium nitrate
Magnesium nitrite
Magnesium nitrosyl
IE3 is maximum for
B
N
Al
P
| I.E.(II) | = | E.A.(I) |
| I.E.(III) | = | I.E.(II) |
| I.E.(IV) | = | E.A.(I) |
| I.E.(IV) | = | I.E.(III) |
If Aufbau's principle is not followed then Ca should have been placed in which of the following blocks of periodic table?
s
p
d
f
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VERY DIFFICULT
MODERATE
SO SIMPLE
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BORING
NICE
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