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

_______ is the outermost shell for elements of period 2. - Science and Technology 1

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प्रश्न

_______ is the outermost shell for elements of period 2.

पर्याय

  • K

  • L

  • M

  • N

MCQ
रिकाम्या जागा भरा

उत्तर

L is the outermost shell for elements of period 2.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Periodic Classication of Element - Choose the correct option.

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एससीईआरटी महाराष्ट्र Science and Technology 1 [English] 10 Standard SSC
पाठ 2 Periodic Classication of Element
Choose the correct option. | Q 7

संबंधित प्रश्‍न

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.

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


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 questions.
i. What is the atomic number of this element?
ii. What is the valency of this element?
iii. What is the group of this element?
iv. To which period does this element belong?
v. With which of the following elements would this element resemble?

`_7N ,  _4Be  ,  _18Ar  , _17CL`


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

What is the atomic number of this element?


Find the odd one out and give its explanation.


Find the odd one out and give its explanation.


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


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.


Beryllium and calcium are alkaline earth metals.


In group 2, beryllium and calcium elements, calcium is more electropositive element than beryllium.


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 ______

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.

Distinguish between:

Group - Period


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.


What is the electronic configuration of K19?


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