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प्रश्न
Define groups of modern periodic table.
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उत्तर
In the modern periodic table, groups (also known as families) are the 18 vertical columns that organize chemical elements by shared properties. Unlike periods, which are horizontal rows representing electron shells, groups are vertical columns of elements with similar chemical properties.
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संबंधित प्रश्न
How does the electronic configuration of an atom relate to its position in the Modern Periodic Table?
What is periodicity in properties of elements with reference to the Modern Periodic Table?
State modern periodic law.
Fill in the following blank with suitable word:
The horizontal rows in a periodic table are called ...............
Give two example of group 17 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 period of the periodic table?
Which element has two shells, both of which are completely filled with electrons?
Explain why all the elements of a group have similar chemical properties.
State how the valency of elements varies in a period of the periodic table?
What is a period in a periodic table?
Explain why, the first period of the periodic table has only two elements whereas second period has eight elements
From the standpoint of atomic structure, what determines which element will be the first and which the last in a period the periodic table?
What are the periods in a periodic table? Give two characteristics of each.
Consider the following elements:
20Ca, 8O, 18Ar, 16S, 4Be, 2He
Which of the above elements would you expect to be:
(i) very stable?
(ii) in group 2 of the periodic table?
(iii) in group 16 of the periodic table?
Define:
Periodic table
Correct the statement.
Transition elements are placed at extreme right of the periodic table.
Name the type of elements which have two outermost shell incomplete.
State its position in the periodic table?
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?
What is meant in the periodic table by a period?
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.
Bicarbonate
State the number of elements in Period 3 of the Periodic Table.
How were elements arranged in the long form of the periodic table or the Modern Periodic Table?
Answer the following question in one sentence.
The modern periodic table is divided into which blocks?
Distinguish between:
s-block - p-block
______ and ______ are called inner transition elements.
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 |
Which of the given elements A, B, C, D and E with atomic number 2, 3, 7, 10 and 30 respectively belong to the same period?
Which one of the following elements exhibit maximum number of valence electrons?
Which of the following elements does not lose an electron easily?
“Hydrogen occupies a unique position in Modern Periodic Table”. Justify the statement.
Explain giving reason why although the nuclear charge in atoms increases in moving from left to right in a period as well as in moving from top to bottom in a group in the Modern periodic table, but the size of the atoms does not vary similarly in both situations.
An element ‘M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of ‘M’ is ______.
What is the general name of the last elements of the Periodic Table?
Answer the following in respect of element \[\ce{_16^32S}\].
- Give its electronic configuration.
- To which group and period does it belon?
- What is its valency?
- Is it a metal or a non-metal?
- Is it a reducing agent or an oxidising agent?
- Give its formula with hydrogen.
Match the atomic number with the following:
A rare gas.
