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प्रश्न
Complete the following flow chart.
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उत्तर
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संबंधित प्रश्न
Why do all the elements of the same group have similar properties?
Write the merits of the modern periodic table over Mendeleev’s Periodic table
Fill in the following blank with suitable word:
The basis for modern periodic table is ...............
Fill in the following blank with suitable word:
Group 18 elements are called ...............
What is meant by a period, in a periodic table?
Is it possible to have an element having atomic number 1.5 placed between hydrogen and helium?
The modern periodic table was prepared by ______.
Explain why all the elements of a group have similar chemical properties.
On the basis of electronic configuration, how will you identify chemically similar elements?
What is the number of elements is 1st period the modern periodic table?
In what respects do the properties of group 1 elements differ from those of group 17 elements? Explain with examples by taking one element from each group.
How many groups and periods does the modern periodic table have?
Name two elements in Alkali metals.
Name two elements in halogens.
Name the type of elements which have one electron short of octet.
What is meant in the periodic table by a period?
Give the symbol and valency of the following element and radical.
Chlorine [Chloride]
Give the symbol and valency of the following element and radical.
Bicarbonate
Give the symbol and valency of the following element and radical.
Nitrate
State what is meant by the term chemical formula.
Give the chemical formula of sodium bicarbonate
Give the chemical formula of ammonium sulphate
Give the chemical formula of carbonic acid
Compare Modern Periodic Law with Mendeleev's Periodic Law.
Which of the following statements about the Modern periodic table is correct?
Write a scientific reason.
There was ambiguity about the correct position of hydrogen in Mendeleev’s periodic table.
Distinguish between:
s-block - p-block
The amount of energy released when one or more electrons is added to the neutral atom is ______
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?
The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belong to the same group?
An element which is an essential constituent of all organic compounds belongs to
Which of the following elements does not lose an electron easily?
Which of the following elements will form an acidic oxide?
An element X which is a yellow solid at room temperature shows catenation and allotropy. X forms two oxides which are also formed during the thermal decomposition of ferrous sulphate crystals and are the major air pollutants.
- Identify the element X
- Write the electronic configuration of X
- Write the balanced chemical equation for the thermal decomposition of ferrous sulphate crystals?
- What would be the nature (acidic/ basic) of oxides formed?
- Locate the position of the element in the Modern Periodic Table.
Define periods of modern periodic table.
Define groups of modern periodic table.
Select the appropriate options and complete the following paragraph:
(metals, non-metals, metalloids, four, seven, s-block, p-block, d-block, f-block).
On the basis of electronic configuration, elements in the modern periodic table are classified Into ______ blocks. Groups 1 and 2 elements are included in ______ and all these elements are metals. (except Hydrogen). Group 13 to 18 elements are included in ______. This block contains metals, non-metals and metalloids. Group 3 to 12 elements are included in ______ and all the elements are ______ elements shown at the bottom of the periodic table i.e. Lanthanides and Actinides constitute ______ and all these elements are metals.
What is the general name of the last elements of the Periodic Table?
