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

The valency of the elements in group 2 is 1. - Science and Technology 1

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प्रश्न

The valency of the elements in group 2 is 1.

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उत्तर

The valency of the elements in group 2 is 1- Wrong

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Periodic Classication of Element - Right or Wrong sentence

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एससीईआरटी महाराष्ट्र Science and Technology 1 [English] 10 Standard SSC
पाठ 2 Periodic Classication of Element
Right or Wrong sentence | Q 8

संबंधित प्रश्‍न

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?


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?


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

To which period does this element belong?


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


Find the odd one out and give its explanation.


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


The number of electrons in the outermost shell of an atom determines the _______.


Write the name.

The group of elements having electronic configuration 2, 2.


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


Beryllium and calcium are alkaline earth metals.


The number of shells decreases in a group from top to bottom.


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


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?


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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