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प्रश्न
Write the name and symbol of the element from the description.
The noble gas with the smallest atomic radius.
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उत्तर
Name: Helium
Symbol: He
संबंधित प्रश्न
What do you understand by atomic size? State its unit?
Why is the size of sodium is greater than magnesium?
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.
The following questions refer to the Periodic Table.
What happens to the atomic size of elements moving from top to bottom of a group?
Arrange the following as per the instruction given in the bracket.
Mg, Cl, Na, S, Si (increasing order of atomic size)
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:
On moving from left to right in a periodic table, the size of the atom ______.
Right or wrong sentence.
Moving from left to right, the size of the atom decreases.
Write scientific reason.
In same period, boron and oxygen elements have different atomic size.
Write information about the given atomic numbers in the table.
| Atomic Number | Electronic configuration | Group | Period | Element |
| 10 | ||||
| 20 | ||||
| 7 |
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.
Which of the following is the correct order of atomic size?
Which of the following is the correct order of atomic size?
Which of the following gives the correct increasing order of the atomic radii of O, F, and N?
Elements have been arranged in the following sequence on the basis of their increasing atomic masses.
| F, | Na, | Mg, | Al, | Si, | P, | S, | Cl, | Ar, | K |
- Pick two sets of elements which have similar properties.
- The given sequence represents which law of classification of elements?
An element with the largest atomic radius among the following is ______.
Arrange the following in order of increasing radii:
Mg2+, Mg, Mg+
Explain your choice.
