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The Position of Elements A, B, C, D and E in the Periodic Table Are Shown Below: - Chemistry

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प्रश्न

 The position of elements A, B, C, D and E in the periodic table are shown below:

Group 1

Group 2

Group 17

Group 18

 

 

 

D

 

B

C

 

A

 

 

E

Which is larger in size (i) D or E (ii) B or C

एक शब्द/वाक्यांश उत्तर
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उत्तर

 E
 B

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 5: The Periodic Table - Exercise 5 (B) [पृष्ठ ८९]

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सेलिना Concise Chemistry [English] Class 9 ICSE
अध्याय 5 The Periodic Table
Exercise 5 (B) | Q 14.4 | पृष्ठ ८९

संबंधित प्रश्न

Define the term : Atomic size


An element Z has atomic number 16. Answer the following questions on Z:

1) State the period and group to which Z belongs

2) Is Z a metal or a non-metal?

3) State the formula between Z and hydrogen

4) What kind of a compound is this?


How does the atomic size vary on going down from top to bottom in a group of the periodic table? Why does it vary this way?


Which of the following element would lose an electron easily?

(a) Mg
(b) Na
(c) K
(d) Ca


The element which has the maximum number of valence electrons is:
(a) Na
(b) P
(c) Si
(d) A


Arrange the following in increasing order of property indicated
SiO2, P2O5, SO3, Cl2O7 (acidic nature)


The elements of one short period of the periodic table are given below in order from left to right:
Li  Be  B  C  O  F Ne
(a) To which period do these elements belong?
(b) One element of this period is missing. Which is the missing element and where should it be placed?
(c) Place the three elements, fluorine, beryllium and nitrogen, in the order of increasing electro negativity.
(d) Which one of the above elements belongs to the halogen series?


Atomic numbers of elements A, B, C, D, E, F are 8, 7, 11, 12, 13 and 9 respectively. State the type of ions they form. 


What is the common feature of the electronic configuration of the elements at the end of Period 2 and Period 3?


Name or state following with reference to the element of the first three periods of the periodic table.

The formula of the hydroxide of the element having electronic configuration 2, 8, 2.


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