6) Two elementsX and Y belong to group 1 and 2 respectively in the same period of the periodic table. Compare these elements with respect to:

No. of valence electrons in their outermost shell

Their valencies

Metallic character

their atomic size

Formula of their chlorides

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Solution

1. Valence electrons X=1 , Y =2
2.Valency X=1 , Y =2
3. metallic character decreases on moving left to right across a period. X is more metallic than Y.
4. Atomic size also decreases on moving left to right across a period, X is bigger in size to Y.
5. XCl and YCl₂

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Similar questions

Two elements X and Y belong to group 1 and 2 respectively in the same period of periodic table.

Compare them with respect to:

(i)The number of valence electrons in their atoms

(ii)Their valencies

(iii)Metallic character

(iv)The sizes of their atoms

(v)The formulae of their oxides

(vi) The formulae of their chlorides

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respectively in the same period of the Periodic Table. Compare these elements with respect to :
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Q. Two elements 'P' and 'Q' belong to the same period of the modern periodic table and are in Group 1 and Group 2, respectively. Compare their following characteristics in tabular form.
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(b) The sizes of their atoms
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(f) The formula of their chlorides

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Question 33
Three elements A, B and C have 3, 4 and 2 electrons respectively in their outermost shell. Give the group number to which they belong in the Modern Periodic Table. Also, give their valencies.

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6) Two elementsX and Y belong to group 1 and 2 respectively in the same period of the periodic table. Compare these elements with respect to: No. of valence electrons in their outermost shell Their valencies Metallic character their atomic size Formula of their chlorides

1. Valence electrons X=1 , Y =2 2.Valency X=1 , Y =2 3. metallic character decreases on moving left to right across a period. X is more metallic than Y. 4. Atomic size also decreases on moving left to right across a period, X is bigger in size to Y. 5. XCl and YCl2

6) Two elementsX and Y belong to group 1 and 2 respectively in the same period of the periodic table. Compare these elements with respect to:

No. of valence electrons in their outermost shell

Their valencies

Metallic character

their atomic size

Formula of their chlorides

1. Valence electrons X=1 , Y =2
2.Valency X=1 , Y =2
3. metallic character decreases on moving left to right across a period. X is more metallic than Y.
4. Atomic size also decreases on moving left to right across a period, X is bigger in size to Y.
5. XCl and YCl₂