Home
Class 11
CHEMISTRY
Which of the following statements is//ar...

Which of the following statements is`//are` correct ?

A

`Z_("eff")` of elements increases along the period `(rarr)`.

B

`Z_("eff")` of elements increases down the group `(darr)`.

C

Isoelectronic species have the same nuclear charge.

D

Screening constant `(sigma)` increases down the group `(darr)`.

Text Solution

Verified by Experts

The correct Answer is:
A, D
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • PERIODIC CLASSIFICATION OF ELEMENTS AND GENERAL INORGANIC CHEMISTRY

    CENGAGE CHEMISTRY|Exercise Exercises (Multiple Correct) Ionisation Energy (Ie)|11 Videos

  • PERIODIC CLASSIFICATION OF ELEMENTS AND GENERAL INORGANIC CHEMISTRY

    CENGAGE CHEMISTRY|Exercise Exercises (Multiple Correct) Electronegativity (En)|5 Videos

  • PERIODIC CLASSIFICATION OF ELEMENTS AND GENERAL INORGANIC CHEMISTRY

    CENGAGE CHEMISTRY|Exercise Exercises (Multiple Correct) Atomic And Ionic Radii|4 Videos

  • P-BLOCK GROUP 14 - CARBON FAMILY

    CENGAGE CHEMISTRY|Exercise Exercises Archives (Subjective)|9 Videos

  • PURIFICATION OF ORGANIC COMPOUNDS AND QUALITATIVE AND QUANTITATIVE ANALYSIS

    CENGAGE CHEMISTRY|Exercise Assertion Reasoning Type|5 Videos

Similar Questions

Explore conceptually related problems

Which of the following statement is//are correct?

Which of the following statement is/are correct ?

Knowledge Check

  • Which of the following statement is//are correct ?

    A
    For all value of n the p orbital have the d=same shape but the overal l size in creases as n increases for a given atom
    B
    The fact then there is a particular direction along which each p orbit has maximum electron density plsys an important rule in determining molecular grometries
    C
    The change closed of a single electron ibn `2 p_(x)` atomic
    D
    None is correct

  • Which of the following statement is//are correct ?

    A
    The energy of an electron in a many electron atom generally increases with an increases in value of n but for a given the lower the value of ? The lower the energy
    B
    An electron close to the nucless experiences a large electrostate attraction
    C
    For a given value of n an electron penetrates of the nucless more than n p el,ectron which penetrates more than a d-electron and so on
    D
    None of correct

  • Which of the following statement is//are correct?

    A
    All ferroelectric solids are piezoelectric.
    B
    All piezoelectric solids are ferroelectric.
    C
    Lead zirconate `(PbZ_(r)O_(3))` is a an antiferroelectric is an antiferroelectric crystal.
    D
    `BaTiO_(3)`, (barium titanate) is a ferroelectric crystal.

    • Similar Questions

    Explore conceptually related problems

    Which of the following statement is/are correct ?

    Which of the following statement is/are correct ?

    Which of the following statement is/are correct?

    Which of the following statement is/are correct?

    Which of the following statements is not correct ?

    Home
    Profile