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प्रश्न
The modern periodic table has 1 to 7 periods.
पर्याय
Right
Wrong
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उत्तर
The modern periodic table has 1 to 7 periods- Right
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संबंधित प्रश्न
In the Modern Periodic Table, which are the metals among the first ten elements?
Write the names given to the vertical columns and horizontal rows in the Modern Periodic Table. How does the metallic character of elements vary on moving down a vertical column? How does the size of atomic radius vary on moving left to right in a horizontal row? Give reason in support of your answer in the above two cases.
Why do all the elements of the same group have similar properties?
Fill in the following blank with suitable word:
Group 1 elements are called ...............
What is meant by a group, in a periodic table?
Explain why, the noble gases are placed in a separate group.
How does the chemical reactivity of the halogens vary on going in group 17 of the periodic table?
What is the number of valence electrons in the atoms of first elements in a period?
What is the major characteristic of the first elements in the periods of the periodic table? What is the general name of such elements?
How do the atomic radii of elements change as we go from left to right in a period of the periodic table?
What are the merits of the modern periodic table of elements?
The following diagram shows a part of the periodic table in which the elements are arranged according to their atomic numbers. (The letters given here not the chemical symbols of the elements):
| a 3 |
b 4 |
c 5 |
d 6 |
e 7 |
f 8 |
g 9 |
h 10 |
|
| i 11 |
j 12 |
k 13 |
l 14 |
m 15 |
n 16 |
o 17 |
p 18 |
(i) Which element has a bigger atom, a or f?
(ii) Which element has a higher valency, k or o?
(iii) Which element is more metallic i or k?
(iv) Which element is more non-metallic, d or g?
(v) Select a latter which represents a metal of valency 2.
(vi) Select a letter which represents a non-metal of valency 2.
How many groups and periods does the modern periodic table have?
Correct the statement.
Copper and zinc are representative elements.
Name two elements in Inert gas.
What do you understand by typical elements?
Name the type of elements which have outermost shell complete.
How does the electronic configuration of an atom relate to its position in the modern periodic table?
Answer the following in respect of element `31/15 P`
Give its electronic configuration
An element barium has atomic number 56. Look up its position in the periodic table and answer the following question.
What will be the formula of its phosphate?
What is the number of elements in the 3rd period, of the modern periodic table?
Name an element of group 18 which can form compounds.
Give the symbol and valency of the following element and radical.
Sodium
Give the symbol and valency of the following element and radical.
Zinc
Give the symbol and valency of the following element and radical.
Sulphur [Sulphide]
Give the symbol and valency of the following element and radical.
Ammonium
Give the chemical formula of sodium sulphite
What are the periods in a periodic table?
Which of the following statements about the Modern periodic table is correct?
Write an Explanation.
Period
Write scientific reason.
Lithium and sodium are included in the same group in periodic table.
Distinguish between:
s-block - p-block
Element ‘X’ forms a chloride with the formula XCl2, which is solid with a high melting point. X would most likely be in the same group of the periodic table as: ______
What is the symbol of the element Tungsten?
Which of the following elements will form an acidic oxide?
Choose an element from period 3 of modern periodic table that matches the description given below in instance. Give a reason for your choice.
It has same valency as Lithium.
Noble gases are placed in the ______ group in the modern periodic table.
______ group elements are called alkaline earth metals.
What is the general name of the last elements of the Periodic Table?
Answer the following in respect of element \[\ce{_16^32S}\].
To which group and period does it belong?
