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Match the columns. Column A Electronic configuration 1) 2, 2 2) 2, 8, 1 3) 2, 5 Column B Valency a) 1 b) 2 c) 3 d) 5

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प्रश्न

Match the columns.

Column A
Electronic
configuration
Column B
Valency
1) 2, 2 a) 1
2) 2, 8, 1 b) 2
3) 2, 5 c) 3
  d) 5
जोड़ियाँ मिलाइएँ
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उत्तर

Column A
Electronic
configuration
Column B
Valency
1) 2, 2 b) 2
2) 2, 8, 1 a) 1
3) 2, 5 c) 3
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अध्याय 2: Periodic Classication of Element - Match the columns [पृष्ठ १५]

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एससीईआरटी महाराष्ट्र Science and Technology Part 1 [English] Standard 10 Maharashtra State Board
अध्याय 2 Periodic Classication of Element
Match the columns | Q 4. | पृष्ठ १५

संबंधित प्रश्न

An element has its electron configuration as 2, 8, 2. Now answer the following question.
a. What is the atomic number of this element?
b. What is the group of this element?
c. To which period does this element belong?
d. With which of the following elements would this element resemble? (Atomic numbers are given in the brackets)
N(7), Be(4), Ar(18), Cl(17)


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

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

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


An element has its electron configuration as 2, 8, 2. Now answer the following question.

What is the group of this element?


______ is the outermost shell for elements of period 2.


Which among the following elements would lose an electron easily?


Which among the following is the largest element?


Find the odd one out and give its explanation.


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Match the columns.

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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

Right or wrong sentence.

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


Beryllium and calcium are alkaline earth metals.


Write name of elements, symbol, atomic number, electronic configuration of second period in modern periodic table?


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.
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  3. From which block the elements X and Y are?
  4. Determine the electronic configuration and valency of these elements.

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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