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

Write the name. The element having stable electron configuration from the third period.

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प्रश्न

Write the name.

The element having stable electron configuration from the third period.

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उत्तर

Argon (Ar)

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पाठ 2: Periodic Classication of Element - Write the name [पृष्ठ १८]

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एससीईआरटी महाराष्ट्र Science and Technology Part 1 [English] Standard 10 Maharashtra State Board
पाठ 2 Periodic Classication of Element
Write the name | Q 5. | पृष्ठ १८

संबंधित प्रश्‍न

Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation.
 11Na, 15P, 17Cl, 14Si, 12Mg Which of these has largest atoms?


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


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.

What is the group of this element?


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 the noble gas having 2 electrons in its valence shell.


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

Write the name.

Highest electropositive element


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.


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  

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


Observe the given chart and answer the questions given below.

Element A B C D
Electronic configuration 2, 1 2, 8 2, 8, 1 2, 8, 8
  1. Which elements are in the same row?
  2. Which elements have the same column?
  3. Which elements are in the 18th column?
  4. Which element is more reactive among A and C?
  5. Which of the following elements A or B will form compounds?

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.
  2. Which type of elements X and Y are metals, nonmetals or metalloids?
  3. From which block the elements X and Y are?
  4. Determine the electronic configuration and valency of these elements.

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