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प्रश्न
On moving from left to right in a periodic table, the size of the atom _______.
पर्याय
increases
decreases
decreases first and then increases
does not change
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उत्तर
On moving from left to right in a periodic table, the size of the atom decreases.
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संबंधित प्रश्न
Arrange the following as per the instruction given in the bracket:
Mg, Cl, Na, S, Si (decreasing order of atomic size).
Which is greater in size an atom or a cation?
Fill in the blank:
On moving across a period from right to left in the periodic table, the atomic size of the atom ___________.
Give reasons for the following:
The size of the anion is greater than the size of the parent atom.
Write the name and symbol of the element from the description.
The atom having the smallest size.
Write the name and symbol of the element from the description.
The noble gas with the smallest atomic radius.
Among the elements of the second period, Li to Ne, pick out the element with the largest atomic size
What happens to the atomic size of elements on moving from left to right in a period?
Fill in the blank by selecting the correct word from the bracket.
If an element has seven electrons in its outermost shell then it is likely to have the _____ atomic size among all the elements in the same period.
The size of an atom depends on the number of valence electrons.
Write scientific reason.
In same period, boron and oxygen elements have different atomic size.
Arrange the following elements in increasing order of their atomic radii.
- Li, Be, F, N
- Cl, At, Br I
An element X (atomic number 17) reacts with an element Y (atomic number 20) to form a divalent halide.
- Where in the periodic table are elements X and Y placed?
- Classify X and Y as metal (s), non-metal (s) or metalloid (s)
- What will be the nature of oxide of element Y? Identify the nature of bonding in the compound formed
- Draw the electron dot structure of the divalent halide
- In below ladder symbols of elements are jumbled up. Rearrange these symbols of elements in the increasing order of their atomic number in the Periodic Table.
- Arrange them in the order of their group also.
- Electropositive nature of the element(s) increases down the group and decreases across the period
- Electronegativity of the element decreases down the group and increases across the period
- Atomic size increases down the group and decreases across a period (left to right)
- 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
- Name the most electronegative element
- Name the element with smallest atomic size
- Name the element which is a metalloid
- Name the element which shows maximum valency.
Arrange the following as per instruction given in the bracket.
Mg, Cl, Na, S, Si (decreasing order of atomic size)
In Period 3 of the Periodic Table, element B is placed to the left of element A. On the basis of this information, choose the correct word from the option to complete the following statement:
The element A would have ______ atomic size than B.
Which one has the largest size?
