Choose the correct statement:

Across a period electropositivity of elements increases

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Across a period acidic nature of oxides increases

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Across a period basic nature of oxides increases

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Across a period metallic character increases

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Solution

The correct option is B
Across a period acidic nature of oxides increases

Elements on the two extremes of a period easily combine with oxygen to form oxides. The normal oxide formed by the element on extreme left is the most basic, in the middle amphoteric and the most acidic on the extreme right.

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Q. Question 48 (a)
(a) Electropositive nature of the element(s) increases down the group and decreases across the period
(b) Electronegativity of the element decreases down the group and increases across the period
(c) Atomic size increases down the group and decreases across a period (left to right)
(d) Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9.

Name the most electropositive element among them

(i) Electropositive nature of the element(s) increases down the group and decreases across the period
(ii) Electronegativity of the element decreases down the group and increases across the period
(iii) Atomic size increases down the group and decreases across a period (left to right)
(iv) Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9.

Name the most electropositive element among them

Q. Question 48 (b)
(a) Electropositive nature of the element(s) increases down the group and decreases across the period
(b) Electronegativity of the element decreases down the group and increases across the period
(c) Atomic size increases down the group and decreases across a period (left to right)
(d) Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9.

Name the most electronegative element.

Which is the element with the smallest atomic size

Q. Question 48(e)
(a) Electropositive nature of the element(s) increases down the group and decreases across the period
(b) Electronegativity of the element decreases down the group and increases across the period
(c) Atomic size increases down the group and decreases across a period (left to right)
(d) Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9.

Name the element which shows maximum valency.

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Choose the correct statement:

The correct option is B Across a period acidic nature of oxides increases Elements on the two extremes of a period easily combine with oxygen to form oxides. The normal oxide formed by the element on extreme left is the most basic, in the middle amphoteric and the most acidic on the extreme right.

The correct option is B
Across a period acidic nature of oxides increases

Elements on the two extremes of a period easily combine with oxygen to form oxides. The normal oxide formed by the element on extreme left is the most basic, in the middle amphoteric and the most acidic on the extreme right.