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Valency and Oxidation States

The elements ...

Question

The elements present in horizontal rows of a periodic table have same:

A

atomic mass

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B

molecules

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C

valence shell

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D

valance electrons

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Solution

The correct option is C valence shell
In a period, the valence shell of the elements remains the same as electrons are added to same outermost shell or else penultimate or anti penultimate shells. Thus correct answer is option $C$ valence shell.

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Similar questions

Q. Fill in the blanks
The elements present in horizontal rows of a periodic table have same valence shell.

Q. Assertion :The Modern Periodic Table has 7 horizontal rows known as periods. Reason: The atoms of different elements which have the same number of occupied shells are placed in the same period. A period indicates the principal quantum number of the outermost shell of an element.

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 .............

(c) On moving from right to left in the second period, the number of valence electrons ..............

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

(e) The tendency to gain an electron ................ on moving down in a group of the periodic table.

Q. 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 periodic table, the atomic size of the atom ...............
(c) On moving form right to left in the second period, the number of valency electrons ...............
(d) On going down in a group in the periodic table, the metallic character of elements ...............
(e) The tendency to gain an electron ............... on moving down in a group of the periodic table.

Q. In the periodic table, vertical columns of elements are called ..... and horizontal rows of elements are called .....

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