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Recent questions and answers in Periodic Classification of Elements
1
answer
Compare and contrast the arrangement of elements in Mendeleev's Periodic Table and the Modern Periodic Table.
answered
Aug 17, 2021
in
Periodic Classification of Elements
by
Saumya
|
3
views
class10
ncert
periodic
classification
of
element
1
answer
In the Modern Periodic Table, calcium (atomic number 20) is surrounded by elements with atomic numbers 12, 19, 21 and 38.
answered
Aug 17, 2021
in
Periodic Classification of Elements
by
Saumya
|
4
views
class10
ncert
periodic
classification
of
element
1
answer
How does the electronic configuration of an atom relate to its position in the Modern Periodic Table?
answered
Aug 17, 2021
in
Periodic Classification of Elements
by
Pari
|
3
views
class10
ncert
periodic
classification
of
element
1
answer
Nitrogen (atomic number 7) and phosphorus (atomic number 15) belong to group 15 of the Periodic Table
answered
Aug 17, 2021
in
Periodic Classification of Elements
by
Pari
|
6
views
class10
ncert
periodic
classification
of
element
1
answer
The position of three elements A, B and C in the Periodic Table are shown below:-
answered
Aug 17, 2021
in
Periodic Classification of Elements
by
Pari
|
6
views
class10
ncert
periodic
classification
of
element
1
answer
An atom has electronic configuration 2, 8, 7. To which of the following elements would it be chemically similar?
answered
Aug 17, 2021
in
Periodic Classification of Elements
by
Pari
|
5
views
class10
ncert
periodic
classification
of
element
1
answer
An atom has electronic configuration 2, 8, 7. What is the atomic number of this element?
answered
Aug 17, 2021
in
Periodic Classification of Elements
by
Pari
|
6
views
class10
ncert
periodic
classification
of
element
1
answer
What property do all elements in the same column of the Periodic Table as fluorine have in common?
answered
Aug 17, 2021
in
Periodic Classification of Elements
by
Pari
|
6
views
class10
ncert
periodic
classification
of
element
1
answer
What property do all elements in the same column of the Periodic Table as boron have in common?
answered
Aug 17, 2021
in
Periodic Classification of Elements
by
Pari
|
8
views
class10
ncert
periodic
classification
of
element
1
answer
Which element has twice as many electrons in its second shell as in its first shell?
answered
Aug 17, 2021
in
Periodic Classification of Elements
by
Pari
|
5
views
class10
ncert
periodic
classification
of
element
1
answer
Which element has a total of two shells, with three electrons in its valence shell?
answered
Aug 17, 2021
in
Periodic Classification of Elements
by
Pari
|
15
views
class10
ncert
periodic
classification
of
element
1
answer
Which element has a total of three shells, with four electrons in its valence shell?
answered
Aug 17, 2021
in
Periodic Classification of Elements
by
Pari
|
4
views
class10
ncert
periodic
classification
of
element
1
answer
Which element has the electronic configuration 2, 8, 2?
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Saumya
|
7
views
class10
ncert
periodic
classification
of
element
1
answer
Which element has two shells, both of which are completely filled with electrons?
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Saumya
|
4
views
class10
ncert
periodic
classification
of
element
1
answer
Element X forms a chloride with the formula XCl_2, which is a solid with a high melting point. X
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Saumya
|
4
views
class10
ncert
periodic
classification
of
element
1
answer
Which of the following statements is not a correct statement about the trends when going from left to right across the periods of periodic Table.
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Saumya
|
20
views
class10
ncert
periodic
classification
of
element
1
answer
By considering their position in the Periodic Table, which one of the following elements would you expect to have maximum metallic characteristic?
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Saumya
|
5
views
class10
ncert
periodic
classification
of
element
1
answer
In the Modern Periodic Table, which are the metals among the first ten elements?
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Saumya
|
10
views
class10
ncert
periodic
classification
of
element
1
answer
Helium is an unreactive gas and neon is a gas of extremely low reactivity. What, if anything, do their atoms have in common?
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Saumya
|
15
views
class10
ncert
periodic
classification
of
element
1
answer
Lithium, sodium, potassium are all metals that react with water to liberate hydrogen gas. Is there any similarity in the atoms of these elements?
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Saumya
|
7
views
class10
ncert
periodic
classification
of
element
1
answer
Name three elements with filled outermost shells.
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Saumya
|
5
views
class10
ncert
periodic
classification
of
element
1
answer
Name two elements that have two electrons in their outermost shells.
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Saumya
|
9
views
class10
ncert
periodic
classification
of
element
1
answer
Name three elements that have a single electron in their outermost shells.
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Pari
|
6
views
class10
ncert
periodic
classification
of
element
1
answer
Name two elements you would expect to show chemical reactions similar to magnesium. What is the basis for your choice?
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Pari
|
6
views
class10
ncert
periodic
classification
of
element
1
answer
How could the Modern Periodic Table remove various anomalies of Mendeleev's Periodic Table?
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Pari
|
4
views
class10
ncert
periodic
classification
of
element
1
answer
Why do you think the noble gases are placed in a separate group?
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Pari
|
8
views
class10
ncert
periodic
classification
of
element
1
answer
What were the criteria used by Mendeleev in creating his Periodic Table?
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Pari
|
3
views
class10
ncert
periodic
classification
of
element
1
answer
Besides gallium, which other elements have since been discovered that were left by Mendeleev in his Periodic Table?
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Pari
|
5
views
class10
ncert
periodic
classification
of
element
1
answer
Use Mendeleev's Periodic Table to predict the formulae for the oxides of the following elements: K, C, AI, Si, Ba.
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Pari
|
6
views
class10
ncert
periodic
classification
of
element
1
answer
What were the limitations of Newlands' Law of Octaves?
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Pari
|
4
views
class10
ncert
periodic
classification
of
element
1
answer
What were the limitations of Dobereiner's classification?
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Pari
|
18
views
class10
ncert
periodic
classification
of
element
1
answer
Did Döbereiner’s triads also exist in the columns of Newlands’ Octaves? Compare and find out.
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Pari
|
4
views
class10
ncert
periodic
classification
of
element
1
answer
The elements of the second period of the Periodic Table are given below: Li Be B C N O F (a) Give reason to explain why atomic radii decrease from Li to F. (b) Identify the most (i) metallic and (ii)non-metallic element.
answered
Aug 16, 2021
in
Periodic Classification of Elements
by
Saumya
|
16
views
class10
ncert
periodic
classification
of
element
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