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Chemistry Class 12 Chapter 1
Periodic Classification of Elements and Periodicity
Test 6
1.
Elements in the periodic table are classified into four block , this is based upon?
Valence orbital
Shell
Sub-shell
All of the above
2.
Which of the element have comparatively greater reducing in size?
Chalcogen
Lanthanide series
Actinides series
Halogen
3.
Which of the species is not isoelectromic?
Nitrogen ion
Carbon ion
Oxygen ion
Fluorine ion
4.
Newland classified the number of elements in increasing order of their atomic mass?
66
62
64
68
5.
Mendeleev’s periodic table has number of groups and and number of periods?
8,12
7,8
8,7
6,7
6.
Uniqueness of Mendeleev’s table is that?
Atomic mass of element
Place Na,K with Ca and Mg
He left empty spaces for undiscovered elements
Classified elements into 12 groups
7.
f block elements are also called ?
inner transition element
coinage metals
alkaline earth elements
outer transition elements
8.
For which of the elements separate group was not mentioned in the Mendeleev’s table?
8A
4A
6A
2A
9.
According to which elements should be arranged on the basic of their atomic number not on the basic of atomic mass?
Moseley
Newland
Mendeleev’s
Dobereiner
10.
Which statement is incorrect?
In positive ion number of proton exceed the number of electron
In negative ion the number of ion exceed the number of electron
Size of negative ion is greater than its parent atom
Size of positive ion is smaller than its parent atom
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