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प्रश्न
To the left of the zig-zag line in the periodic table are the metal elements.
विकल्प
Right
Wrong
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उत्तर
To the left of the zig-zag line in the periodic table are the metal elements- Right
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संबंधित प्रश्न
Compare and contrast the arrangement of elements in Mendeleev’s periodic Table and the Modern Periodic Table.
How many rows and columns are there in the Modem Periodic Table?
Fill in the following blank with suitable word:
Group 18 elements are called ...............
Give two example of group 17 elements.
Give two example of group 18 elements.
Would you place the two isotopes of chlorine, CI-35 and CI-37 in different slots because of their different atomic masses or in the same slot because their chemical properties are the same? Justify your answer.
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?
How does the chemical reactivity of the halogens vary on going in group 17 of the periodic table?
On the basis of electronic configuration, how will you identify the first element of a period?
Helium and neon are unreactive gases. What, if anything, do their atoms have in common?
Name two elements in each case:
Transition element
Name two elements in each case:
Actinides
Name the type of elements which have two outermost shell incomplete.
Answer the following in respect of element `31/15 P `
To which group and period does it belong?
Arrange the elements of second and third periods in increasing order of their atomic size.
Third Period.
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?
An element E has following electronic configuration:
|
K |
L |
M |
|
2 |
8 |
6 |
(a) To which group of the periodic table does element E belong?
(b) To which period of the periodic table does element E belong?
(c) State the number of valence electrons present in element E.
(d) State the valency of the element E.
How many periods and groups are there in the modern periodic table?
An element A has 2 electrons in its fourth shell. State its electronic configuration.
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.
Sulphite
State what is meant by the term chemical formula.
Give the chemical formula of magnesium nitrate
Give the chemical formula of carbonic acid
State the number of elements in Period 1 of the Periodic Table.
State the number of elements in Period 2 of the Periodic Table.
How were elements arranged in the long form of the periodic table or the Modern Periodic Table?
Which of the following statements about the Modern periodic table is correct?
Position of A, B and C three elements is given in the table from the modern periodic table. Answer the following questions.
| Periods | Group 2 | Group 17 |
| 2 | ----- | A |
| 3 | B | ----- |
| 4 | ----- | C |
- What is A element metal or nonmetal?
- Which is the outermost orbit of element B?
- Identify C element and it's physical state.
What are groups and periods in the modern periodic table?
The element which has the least tendency to lose electrons is ______
The amount of energy released when one or more electrons is added to the neutral atom is ______
Which of the following is the outermost shell for elements of period 2?
Explain the position of hydrogen in the periodic table.
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?
Name two elements that you would expect to show chemical reactions similar to calcium. What is the basis of your choice?
