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

Complete the following chart. Shell K L N n 2 3 4 2n2 2 × 12 2 × 32 2 × 42 Electron holding capacity 2 8 18

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प्रश्न

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  
तक्‍ता पूर्ण करा
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उत्तर

Shell n 2n2 Electron holding
capacity
K 1 2 × 12 2
L 2 2 × 22 8
M 3 2 × 32 18
N 4 2 × 42 32
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पाठ 2: Periodic Classication of Element - Solve the following Questions [पृष्ठ २६]

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एससीईआरटी महाराष्ट्र Science and Technology Part 1 [English] Standard 10 Maharashtra State Board
पाठ 2 Periodic Classication of Element
Solve the following Questions | Q 5. | पृष्ठ २६

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.

 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 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?


Write the scientific reason.

The third period contains only eight elements even though the electron capacity of the third shell is 18


______ is the outermost shell for elements of period 2.


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


Which among the following is the largest element?


Answer the following question in one sentence.

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


Answer the following question in one sentence.

What determines the chemical reactivity of elements?


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.

The group of elements having electronic configuration 2, 2.


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.


Right or wrong sentence.

The number of shields decreases as the calculation goes down from top to bottom.


Write an explanation.

Group


Find the period in which these elements can be placed.

4Be, 17Cl, 2He, 13Al


Identify periods of elements and blocks of elements from given electronic configuration.

  1. 2, 8, 2
  2. 2, 8, 7
  3. 2, 1

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