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प्रश्न
Group 1 and 2 : s block : : group 13 and 18 : _______
उत्तर
Group 1 and 2 : s block : : group 13 and 18 : p Block
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संबंधित प्रश्न
How does the tendency of elements to gain electrons change as we move from left to right in a period? State the reason of this change.
Give two example of group 1 elements.
Is it possible to have an element having atomic number 1.5 placed between hydrogen and helium?
The three elements having chemical symbols of Si, B and Ge are:
(a) all metals
(b) all non-metals
(c) all metalloids
(d) Si is metalloid, B is metal and Ge is non-metal
Consider the following elements:
Na, Ca, Al, K, Mg, Li
Which of these elements belong to the same group of the periodic table?
How does the chemical reactivity of the halogens vary on going in group 17 of the periodic table?
State whether the following statement is true or false:
On going down in a group of the periodic table, the number of valence electrons increases.
Explain why All the elements of a group have similar chemical properties.
What is the number of elements is 1st period the modern periodic table?
Which of the following are the correct characteristics of isotopes of an element?
(i) same atomic mass
(ii) same atomic number
(iii) same physical properties
(iv) same chemical properties
(a) (i), (ii) and (iv)
(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
The atomic numbers of the three elements X, Y and Z are 2, 6 and 10 respectively.
(i) Which two elements belong to the same group?
(ii) Which two elements belong to the same period?
Give reasons for your choice.
Consider the following elements:
20Ca, 8O, 18Ar, 16S, 4Be, 2He
Which of the above elements would you expect to be:
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(ii) in group 2 of the periodic table?
(iii) in group 16 of the periodic table?
The elements A, B, C and D belong to groups 1, 2, 14 and 17 respectively of the periodic table. Which of the following pairs of elements would produce a covalent bond?
(i) A and D
(ii) C and D
(iii) A and B
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What are horizontal rows and vertical columns in a periodic table known as?
Correct the statement.
Copper and zinc are representative elements.
Name two elements in Alkali metals.
Name the type of elements which have one electron short of octet.
Answer the following in respect of element `31/15 P `
To which group and period does it belong?
Fill in the blank:
The horizontal rows in the periodic table are called _____________.
Write a short note.
Structure of the modern periodic table.
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What is the number of elements in the 3rd period, of the modern periodic table?
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A covalent compound formed by an element in period 2 and a halogen.
Give the symbol and valency of the following element and radical.
Calcium
Give the symbol and valency of the following element and radical.
Sulphite
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Name the following:
The group of the Modern Periodic Table to which calcium [Ca2+] belongs.
State the number of elements in Period 2 of the Periodic Table.
Group 13 to 18 : p block : : _______ : d block
Distinguish between:
s-block - p-block
Identify gas A in the following experiment.
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The amount of energy released when one or more electrons is added to the neutral atom is ______
Group 16 elements are collectively called as ______.
The maximum number of electrons that can be accommodated in s, p,d, and f subshells are ______.
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Name the following metal:
A metal present in period 3, group 1 of the periodic table.
