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Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation. 7N, 6C, 8O, 5B, 13Al Which is the most electronegative - Science and Technology 1

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प्रश्न

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

7N, 6C, 8O, 5B, 13Al Which is the most electronegative element among these?

संख्यात्मक
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उत्तर

7N, 6C, 8O, 5B, 13Al
The electronic configuration of the following elements is:
7N =2, 5
6C = 2, 4
8O = 2, 6

5B = 2, 3
13Al = 2, 8, 3
8O is the most electronegative element among these because electronegativity increases as we move from left to right in a period of the periodic table.

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अध्याय 2: Periodic Classification of Element - Exercises [पृष्ठ २९]

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बालभारती Science and Technology 1 [English] Standard 10 Maharashtra State Board
अध्याय 2 Periodic Classification of Element
Exercises | Q 4.3 | पृष्ठ २९

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.

 1H, 7N, 20Ca, 16S, 4Be, 18Ar Which of these elements belong to the second group?


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 an explanation.

13Al, 14Si, 11Na, 12Mg, 16S

Which of the above elements has the highest metallic character?


Which of this element belong to the period 3? Write their electronic configuration

`3^(Li) , 14^(Si) , 2^(He) , 15^(P)`


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

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)


Which pair of atomic numbers represents elements in the same group?


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.


Find the odd one out and give its explanation.


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
Electronic
configuration
Valency
1) 2, 2 a) 1
2) 2, 8, 1 b) 2
3) 2, 5 c) 3
  d) 5

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

Write the name.

Highest electropositive element


Write scientific reason.

Boron and oxygen elements are placed in the second period in periodic table.


Complete the following chart.

Shell n 2n2 Electron holding
capacity
K ______ 2 × 12 2
L 2 ______ 8
______ 3 2 × 32 18
N 4 2 × 42 ______

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.

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