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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Write the name. The element having stable electron configuration from the third period. - Science and Technology 1

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प्रश्न

Write the name.

The element having stable electron configuration from the third period.

एक शब्द/वाक्यांश उत्तर

उत्तर

The element having stable electron configuration from the third period- Argon (Ar)

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Periodic Classication of Element - Write the name

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संबंधित प्रश्‍न

Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation.
3Li, 14Si, 2He, 11Na, 15P Which of these elements belong to be period 3?


Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation.
 4Be, 6C, 8O, 5B, 13Al Which is the most electropositive element among these?


Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation.
 19K, 3Li, 11Na, 4Be Which of these atoms has smallest atomic radius?


Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with an explanation.

13Al, 14Si, 11Na, 12Mg, 16S

Which of the above elements has the highest metallic character?


Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation.

 6C, 3Li, 9F, 7N, 8O Which of the above elements has the highest nonmetallic character?


Which among the following elements would lose an electron easily?


Find the odd one out and give its explanation.


Write the name of noble gas having 2 electrons in its valence shell.


Write the name of an element having electronic configuration 2,8,2.


Match the columns.

Column A Column B
1) s -block a) Lanthanides and actinides
2) p -block b) Group 3 to 12
3) d -block c) Group 1, 2
4) f -block d) Group 13 to 18
  e) Zero group

Match the columns.

Column A Column B
1) Alkaline earth metals a) Group 18
2) Alkali metals b) Group 17
3) Halogen c) Group 2
4) Noble gas d) Group 1
  e) Group 14

The elements lithium and beryllium are in the same period because their valencies are similar.


Electronic configuration of element A is 2,8,1. Answer the following questions based on this information.

  1. What is the atomic number of element A?
  2. Find the group to which this element belongs.

XY compound is formed by X (Atomic number 11) and Y (Atomic number 17), then answer the questions given below.

  1. Determine the position of the element X and Y periodic table.
  2. X and Y belongs to which of the following: metals, nonmetals or metalloids?
  3. From which block the elements X and Y are?
  4. Determine the electronic configuration and valency of these elements.

Observe the periodic table given below and write the answers of the questions.

  1. Write the name and valencies of the elements in 3rd row.
  2. Classify the elements in this row as metal, nonmetal and metalloids.
  3. Which block does nonmetals belong to?
  4. Write name of any two metalloid elements.

Make a chart which shows the name of the element, valency, atomic number, electronic configuration in the 2nd row of the modern periodic table and arrange these elements in ascending order of atomic mass.


An element has its electron configuration as 2, 8, 1. Now answer the following questions:

  1. What is the atomic number of this element?
  2. What is the group of this element?
  3. To which period does this element belong?

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