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Arrange the Following as per Instruction Given in the Bracket. Cl, F, Br, I (Increasing Electron Affinity) - Chemistry

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प्रश्न

Arrange the following as per instruction given in the bracket.

Cl, F, Br, I (increasing electron affinity)

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उत्तर

 Cl, F, Br, I (increasing electron affinity) 

 I < Br < F < Cl

 -295 KJ mol-1 < -324 KJ mol-1 < -327.9 KJ mol-1 < -349 KJ mol-1

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अध्याय 1: Periodic Table, Periodic Properties and Variations of Properties - Exercise 1 [पृष्ठ १७]

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सेलिना Concise Chemistry [English] Class 10 ICSE
अध्याय 1 Periodic Table, Periodic Properties and Variations of Properties
Exercise 1 | Q 2.4 | पृष्ठ १७

संबंधित प्रश्न

Write the number of horizontal rows in the modern periodic table. What are these rows called?


An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is ______.


The elements A, B, C, D and E have atomic numbers 9, 11, 17, 12 and 13 respectively. The pair of elements which belongs to the same group of the periodic table is:

(a) A and B
(b) B and D
(c) A and C
(d) D and E


State the valency of the elements of periods 3 and write the formula of their oxides.


How does the number of:

valency vary on moving from left to right in the second period of the periodic table?


On the basis of electronic configuration, how will you identify the first and the last element of a period?


Fill in the blank 
Most electropositive elements belong to ______ group.


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

Which one of the above elements belongs to the halogen series?


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

The non-metallic element present in period 3 other than sulphur and chlorine.


Fill in the blanks from the words A to F given below.

A: Decreases
B: Increases
C: Remains same
D: Increases by one
E: Electropositive
F: Electronegative

Down a group in the Modern Periodic Table.
No. of electron shells __________; No. of valence electrons ________; Electronegativity ________ Character of elements changes from _________ to ____________.


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