Advertisements
Advertisements
प्रश्न
Right or wrong sentence.
Moving from left to right, the size of the atom decreases.
विकल्प
Right
Wrong
Advertisements
उत्तर
The given sentence is right.
Explanation:
If you mean “moving from left to right across a period of the periodic table”, the sentence is correct: atomic size (atomic radius) generally decreases because the nuclear charge increases while electrons are added to the same shell, so electrons are pulled in closer to the nucleus.
APPEARS IN
संबंधित प्रश्न
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 atomic mass.
Give scientific reasons for the following:
Atomic radius goes on decreasing while going from left to right in a period.
Write a scientific reason.
Atomic radius goes on increasing down a group.
What happens to the atomic size of elements on moving from left to right in a period?
With reference to the variation of properties in the Periodic Table, which of the following is generally true?
Atomic size increases from left to right across a period.
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, (decreasing order of atomic size).
Atomic radius is expressed in the unit ______.
While going from top to bottom in a group the atomic radius ______.
Right or wrong sentence.
Nanometer unit is used to measure atomic radius.
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?
When an atom of iodine becomes an iodine ion (I–) the radius will ______
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
An element with the largest atomic radius among the following is ______.
Which one has the largest size?
