Q-10-10- -a- How are the following related - nbsp- nbsp-i- Number of valence electrons of different elements in the same group- nbsp- nbsp-ii- Number of shells of elements in the same period- nbsp- nbsp-iii- How do the following change - nbsp- nbsp- nbsp- -b- How do the following change - nbsp- nbsp-i- nbsp- Number of shells of elements as we go down a group- nbsp- nbsp-ii- nbsp- Number of valence electrons of elements on moving left to right in a period- nbsp- nbsp- nbsp-iii- Atomic radius of elements moving from left to right in a period- nbsp- nbsp- nbsp-iv- Metallic character down a group- nbsp- nbsp-

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Byju's Answer

Standard X

Chemistry

Electronic Configuration of d- Block

Q.10: 10. ...

Question

Q.10:

10. (a) How are the following related ?
(i) Number of valence electrons of different elements in the same group.
(ii) Number of shells of elements in the same period.
(iii) How do the following change ?

(b) How do the following change ?
(i) Number of shells of elements as we go down a group.
(ii) Number of valence electrons of elements on moving left to right in a period.
(iii) Atomic radius of elements moving from left to right in a period.
(iv) Metallic character down a group.

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Solution

Dear student,
10.a
i) No. of valence electron of same group remains same .
ii) The no. of shells of elements of same periods remains same no. of electrons changes.

10.b.
i) The no. of shells increases as we go down the group.
ii) No. of valence electrons increases as we go left to right in the period.
iii) Atomic radii of the elements decreases on moving in a period.
iv) Metallic character increases down the group.
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Similar questions

Write the number of periods the modern periodic table has. How do the valency and metallic character of elements vary on moving from left to right in a period? How do the valency and atomic size of elements vary down a group?

Parts (a) to (e) refer to changes in the properties of elements on moving from left to right across a period of Periodic Table. For each property, choose the correct answer.

(a) The non-metallic character of the elements :

(i) decreases, (ii) increases,

(iii) remains the same, (iv) depends on the period

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(i) depends on the number of valence electrons,

(ii) remains the same,

(iii) decreases,

(iv) increases.

(i) goes up and down (ii) decreases

(iii) increases (iv) remains the same

(d) The atomic size :

(i) decreases,

(ii) increases,

(iii) remains the same ,

(iv) sometimes increases and sometimes decreases.

(e) The electron affinity of the elements in groups 1 to 7 :

(i) goes up and then down.

(ii) decreases and then increases,

(iii) increases,

(iv) decreases.

(a) What are the usual number of valence electrons and valency of group 18 elements of the periodic table?

(b) What happens to the number of valence electrons in the atoms of elements as we go down in a group of the periodic table?

Fill in the blanks in the following statements :

(a) The horizontal rows in a periodic table are called .............

(b) In going across a period (right to left) in the periodic table, the atomic size of the atom .............

(d) When we down in a group in the periodic table, the metallic character of elements ..............

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What happens to number of valence electrons in atoms of elements as we go down a group of the periodic table ?

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