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The atomic radius decreases in a period ...

The atomic radius decreases in a period due to

A

Increase in nuclear attraction

B

Decrease in nuclear attraction

C

Increase in number of electrons

D

Decrease in number of electrons

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The correct Answer is:
A
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It is not possible to measure the atomic radius precisely since the electron cloud surrounding the atom doesnot have sharp boundary. One practical approach to estimate the size of an atom of a non-metallic element is to measure the distance between two atoms when they are bound together by a single bond in a covalent molecule and then dividing by two. For metals we define the term "metallic radius" which is taken as half the internuclear distance separating the metal cores in the metallic crystal. The vander Waal's radius represents the overall size of the atoms which includes its valence shell in a nonbonded situation. It is the half of the distance between two similar atoms in separate molecules in a solid. The atomic radius decreases across a period and increases down the group. Same trends are observed in case of ionic radius. Ionic radius of the species having same number of electrons depends on the number of protons in their nuclei. Atomic radii of the noble gases are larger than the precedent elements of the same periods because

It is not possible to measure the atomic radius precisely since the electron cloud surrounding the atom doesnot have sharp boundary. One practical approach to estimate the size of an atom of a non-metallic element is to measure the distance between two atoms when they are bound together by a single bond in a covalent molecule and then dividing by two. For metals we define the term "metallic radius" which is taken as half the internuclear distance separating the metal cores in the metallic crystal. The vander Waal's radius represents the overall size of the atoms which includes its valence shell in a nonbonded situation. It is the half of the distance between two similar atoms in separate molecules in a solid. The atomic radius decreases across a period and increases down the group. Same trends are observed in case of ionic radius. Ionic radius of the species having same number of electrons depends on the number of protons in their nuclei. The size of iso electronic species -F^(-) , Na^(+) and Mg^(2+) is effected by

It is not possible to measure the atomic radius precisely since the electron cloud surrounding the atom doesnot have sharp boundary. One practical approach to estimate the size of an atom of a non-metallic element is to measure the distance between two atoms when they are bound together by a single bond in a covalent molecule and then dividing by two. For metals we define the term "metallic radius" which is taken as half the internuclear distance separating the metal cores in the metallic crystal. The vander Waal's radius represents the overall size of the atoms which includes its valence shell in a nonbonded situation. It is the half of the distance between two similar atoms in separate molecules in a solid. The atomic radius decreases across a period and increases down the group. Same trends are observed in case of ionic radius. Ionic radius of the species having same number of electrons depends on the number of protons in their nuclei. The correct order of radii is

It is not possible to measure the atomic radius precisely since the electron cloud surrounding the atom doesnot have sharp boundary. One practical approach to estimate the size of an atom of a non-metallic element is to measure the distance between two atoms when they are bound together by a single bond in a covalent molecule and then dividing by two. For metals we define the term "metallic radius" which is taken as half the internuclear distance separating the metal cores in the metallic crystal. The vander Waal's radius represents the overall size of the atoms which includes its valence shell in a nonbonded situation. It is the half of the distance between two similar atoms in separate molecules in a solid. The atomic radius decreases across a period and increases down the group. Same trends are observed in case of ionic radius. Ionic radius of the species having same number of electrons depends on the number of protons in their nuclei. Which of the following statement is correct?

It is not possible to measure the atomic radius precisely since the electron cloud surrounding the atom doesnot have sharp boundary. One practical approach to estimate the size of an atom of a non-metallic element is to measure the distance between two atoms when they are bound together by a single bond in a covalent molecule and then dividing by two. For metals we define the term "metallic radius" which is taken as half the internuclear distance separating the metal cores in the metallic crystal. The vander Waal's radius represents the overall size of the atoms which includes its valence shell in a nonbonded situation. It is the half of the distance between two similar atoms in separate molecules in a solid. The atomic radius decreases across a period and increases down the group. Same trends are observed in case of ionic radius. Ionic radius of the species having same number of electrons depends on the number of protons in their nuclei. Which one among the following sets of ions represents the collection of isoelectronic species?

How does the atomic radius vary in a period of elements?

The atomic radii of transition elements decreases slowly as the atomic number increases in a period. Account for it

Define atomic radius.

How does atomic radius vary in a period and in a group? How do you explain the variation.

AAKASH SERIES-PERIODIC PROPERTIES-LEVEL -I (EAMCET) EXERCISE -IV
  1. Maximum oxidation state (+8) is exhibited by

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  2. An element has nine positive charges in its nucleus. Its common oxidat...

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  3. An element with electronic arrangement as 2, 8, 18, 1 will exhibit the...

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  4. Basic nature of the oxides of a period from left to right

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  5. Oxide that is most acidic

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  6. Generally the nature of the non-metal oxides is

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  7. The outermost electronic configuration of most electropositive element...

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  8. The most electropositive element is

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  9. The tendency of an element to lose an electron is called

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  10. Nature of Sb4O6 is

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  11. Chemical similarity between B and Al is due to

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  12. Pair of ions with similar ionic radii

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  13. Among the following pairs of elements, the pair that is different from...

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  14. Some statements are given regarding nature of oxides (i) In second ...

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  15. When an atom of an electronegative element becomes anion, which of the...

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  16. On going down a main subgroup in the periodic table (example Li to Cs ...

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  17. Identify the correct statement

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  18. Identify the correct order in which the ionic radius of the following ...

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  19. The atomic radius decreases in a period due to

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  20. Among the following, the number of elements showing only one non-zero ...

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