Advertisements
Advertisements
प्रश्न
What would be the correct order if Zn, Fe, Al and Cu are arranged in increasing order of reactivity?
विकल्प
Cu, Fe, Zn, Al
Al, Cu, Fe, Zn
Zn, Al, Cu, Fe
Fe, Zn, Al, Cu.
Advertisements
उत्तर
Cu, Fe, Zn, Al
APPEARS IN
संबंधित प्रश्न
In the Modern Periodic Table, which are the metals among the first ten elements?
The position of three elements A, B and C in the Periodic Table are shown below –
|
Group 16
|
Group 17
|
|
−
|
−
|
|
−
|
A
|
|
−
|
−
|
|
B
|
C
|
(a) State whether A is a metal or non-metal.
(b) State whether C is more reactive or less reactive than A.
(c) Will C be larger or smaller in size than B?
(d) Which type of ion, cation or anion, will be formed by element A?
How does the electronic configuration of an atom relate to its position in the Modern Periodic Table?
Compare and contrast the arrangement of elements in Mendeleev’s periodic Table and the Modern Periodic Table.
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.
Fill in the following blank with suitable word:
The horizontal rows in a periodic table are called ...............
Fill in the following blank with suitable word:
Group 1 elements are called ...............
The atomic numbers of four elements P, Q, R and S are 6, 8, 14 and 16 respectively. Out of these, the element known as metalloid is:
(a) P
(b) Q
(c) R
(d) S
Consider the following elements:
Na, Ca, Al, K, Mg, Li
Which of these elements belong to the same group of the periodic table?
Which element has the electronic configuration 2, 8, 2?
How does the chemical reactivity of alkali metals vary on going in group 1 of the periodic table?
Explain why All the elements of a period have different chemical properties.
How many groups and periods does the modern periodic table have?
Name two elements in each case:
Transition element
The electronic configuration of an element T is 2, 8, 8, 1.
What is the group number of T?
State the main aim of classifying elements. Which is the more fundamental property of elements that is used in the development of Modern Periodic Table? Name and state the law based on this fundamental property. On which side of the periodic table one can find metals, non-metals and metalloids?
State the modern periodic law.
What is meant in the periodic table by a period?
What is the number of elements in the 3rd period, of the modern periodic table?
Answer the following question.
How it can be proved that the basic structure of the Modern Periodic Table is based on the electronic configuration of atoms of different elements?
Give the symbol and valency of the following element and radical.
Sulphur [Sulphide]
Give the symbol and valency of the following element and radical.
Carbonate
Give the chemical formula of sodium nitrate
Give the chemical formula of sodium bicarbonate
Fill in the blank:
The element lithium in the Modern Periodic Table with valency 1+ belongs to the group ______.
State the number of elements in Period 3 of the Periodic Table.
Group 13 to 18 : p block : : _______ : d block
Distinguish between:
Group 17 - Group 18
An X element with atomic number 11 and Y element with atomic number 13 belongs to the third period in the modern periodic table. With this information, give the answers of the below questions.
- Which element has more metallic character from these two elements?
- What is the valency of each X and Y elements?
- Atom size of Y element is smaller than atom size of X element. Explain.
Elements in the modern periodic table are arranged in ______groups and______ periods.
State whether true or false. If false, correct the statement.
Lanthanides and actinides are kept at the bottom of the periodic table because they resemble each other but they do not resemble with any other group elements.
______ and ______ are called inner transition elements.
Which one of the following elements exhibit maximum number of valence electrons?
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.
Give the criteria on the basis of which elements are placed (i) in a group and (ii) in a period in the modern periodic table. The atomic number of an element is 16. According to the criteria, in which group and period it should be placed?
Answer the following in respect of element \[\ce{_16^32S}\].
Give its electronic configuration.
Match the atomic number with the following:
A rare gas.
Match the atomic number with the following:
An element of group 2.
A group of elements in the periodic table is given below (Boron is the first member of the group and Thallium is the last).
Boron, Aluminium, Gallium, Indium, Thallium
Answer the following question in relation to the above group of elements:
If the electronic configuration of aluminium is 2, 8, 3, how many electrons are there in the outer shell of thallium?
