Advertisements
Advertisements
प्रश्न
Right or wrong sentence.
Nanometer unit is used to measure atomic radius.
Right or wrong sentence.
Nanometers use these units to measure atoms.
पर्याय
Right
Wrong
Advertisements
उत्तर
The given sentence is wrong.
Explanation:
Atomic radius is normally reported in picometers (pm) or ångströms (Å) because typical atomic sizes are on the order of 10–300 pm (0.01 - 0.3 nm); 1 pm = 10−12 m. While you can convert to nanometres, `±/"A"` are the standard, more convenient units.
APPEARS IN
संबंधित प्रश्न
Answer the following in respect of element `31/15 P `
Is it a reducing agent or oxidizing agent?
Answer the following in respect of element `31/15 P `
Give its formula with chlorine?
Give the trends in atomic size on moving across the period left to right.
Arrange the elements of second and third periods in increasing order of their atomic size (excluding noble gases).
Why is the size of neon greater than fluorine?
Give reasons for the following:
The size of the anion is greater than the size of the parent atom.
Arrange the following in increasing order of property indicated
I, I+, I- (atomic size)
Select the correct answer
Atomic radii of fluorine and neon in angstrom unit are
The metals of Group 2 from top to bottom are Be, Mg, Ca, Sr and Ba.
- Which one of these elements will form ions most readily and why?
- State the common feature in their electronic configuration.
The size of an atom is indicated by its ______.
While going from top to bottom in a group the atomic radius ______.
Right or wrong sentence.
Moving from left to right, the size of the atom decreases.
Right or wrong sentence.
The size of an atom depends on the number of valence electrons.
Write information about the given atomic numbers in the table.
| Atomic Number | Electronic configuration | Group | Period | Element |
| 10 | ||||
| 20 | ||||
| 7 |
Which of the following is the correct order of atomic size?
- 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)
Give reason for the following:
The size of a Cl− ion is greater than the size of a Cl atom.
