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प्रश्न
The d-block elements are called as _______ elements.
विकल्प
transition
metalloid
normal
inner transition
उत्तर
The d-block elements are called as transition elements.
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संबंधित प्रश्न
What is periodicity in properties of elements with reference to the Modern Periodic Table?
Fill in the following blank with suitable word:
Group 1 elements are called ...............
Give two example of group 1 elements.
What is the name of those elements which divide metals and non-metals in the periodic table?
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 two shells, both of which are completely filled with electrons?
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.
What is the fundamental difference in the electron configurations between the group 1 and group 2 elements?
What is the main characteristic of the last elements in the periods of the periodic table? What is the general name of such elements?
What are the advantages of the periodic table?
What are horizontal rows and vertical columns in a periodic table known as?
Correct the statement.
Copper and zinc are representative elements.
Name the metals in the first twenty elements.
Name the type of elements which have two electrons in the outermost orbit.
Fill in the blank:
The horizontal rows in the periodic table are called _____________.
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 would be the correct order if Zn, Fe, Al and Cu are arranged in increasing order of reactivity?
What is the number of elements in the 1st period?
Give the symbol and valency of the following element and radical.
Sodium
Give the symbol and valency of the following element and radical.
Hydrogen
Give the symbol and valency of the following element and radical.
Bicarbonate
State what the group number in the Modern Periodic Table signifies. Give a reason why elements in the same group, have similar valency and similar chemical properties.
The modern periodic table shows the molecular masses of the elements in each frame.
Write an Explanation.
Period
Write scientific reason.
There was ambiguity about the correct position of hydrogen in Mendeleev’s periodic table.
______ is the longest period in the periodical table.
______ forms the basis of the modern periodic table.
How does the property vary in periods and in groups?
Which of these belong to the same period?
| Element | A | B | C |
| Atomic number | 2 | 10 | 5 |
In the modern periodic table, elements are arranged according to their ______
The inert gas which lies in the third period is ______
Three elements A, B and C have 3, 4 and 2 electrons respectively in their outermost shell. Give the group number to which they belong in the Modern Periodic Table. Also, give their valencies.
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 a similar structure to diamond.
Spot the error:
The elements of group 13 are called the carbon family.
A part of modern periodic table is given below. On its basis, answer the following questions:
| Group No. → | 1 | 2 | 13 | 14 | 15 | 16 | 17 | 18 |
| Period ↓ | ||||||||
| 2 | A | B | ||||||
| 3 | E | D | F | C |
Which of the element is a Noble gas?
Define periods of modern periodic table.
An element ‘M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of ‘M’ is ______.
Name the metalloids in the first twenty elements.
Match the atomic number with the following:
A rare gas.
Match the atomic number with the following:
An element of group 2.
