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प्रश्न
Fill in the blanks.
Size of the atoms ______ from left to right across a period and ______ on descending in a group of normal elements.
उत्तर
Size of the atoms Decrease from left to right across a period and increase on descending in a group of normal elements.
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संबंधित प्रश्न
Answer the following in respect of element `31/15 P `
Give its formula with chlorine?
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 changes in the properties of elements on moving from left to right across a period of the Periodic Table. For the property, choose the correct answer.
The atomic size:
Atomic radius is expressed in the unit _______.
The electronic configuration of metal A is 2, 8, 18, 1.
The metal A when exposed to air and moisture forms B a green layered compound. A with con. H2 SO4 forms C and D along with water. D is a gaseous compound. Find A, B, C, and D.
An element X has mass number 40 and contains 21 neutrons in its atom. To which group of the Periodic Table does it belong?
Which of the following gives the correct increasing order of the atomic radii of O, F and N?
An element with the largest atomic radius among the following is ______.
Arrange the following as per instruction given in the bracket.
Mg, Cl, Na, S, Si (decreasing order of atomic size)
Give reason for the following:
The size of a Cl− ion is greater than the size of a Cl atom.
