TS EAMCET 2020 (Online) 11th September Morning Shift | Atomic Structure Question 54 | Chemistry

In the two elements, ${ }_{Z_1} A^{M_1}$ and ${ }_{Z_2} B^{M_2}$, the following relations are true. $M_1 \neq M_2$ and $Z_1 \neq Z_2$ but $M_1-Z_1=M_2-Z_2$. These elements are ( $M$ is atomic weight, $Z$ is atomic number)

isotonic

isobaric

isotopic

isoelectronic

TS EAMCET 2020 (Online) 11th September Morning Shift

MCQ (Single Correct Answer)

-0

The correct order of decreasing energy for the electrons whose quantum numbers $n$ and $l$ are given below, is

A. $n=5$ and $l=2$

B. $n=5$ and $l=0$

C. $n=4$ and $l=3$

D. $n=4$ and $l=1$

A $>$ C $>$ B $>$ D

A $>$ B $>$ C $>$ D

C $>$ A $>$ D $>$ B

A $>$ B $>$ D $>$ C

TS EAMCET 2020 (Online) 11th September Morning Shift

MCQ (Single Correct Answer)

-0

Find the correct set with isoelectronic species?

$\mathrm{N}^{3-}, \mathrm{F}^{-}, \mathrm{O}_2, \mathrm{Ca}^{2+}$

$\mathrm{Ca}^{2+}, \mathrm{Cl}^{-}, \mathrm{Al}^{3+}, \mathrm{O}_2^{-}$

$\mathrm{N}^{3-}, \mathrm{Mg}^{2+}, \mathrm{F}^{-}, \mathrm{O}^{2-}$

$\mathrm{Mg}^{2+}, \mathrm{O}_2^{-}, \mathrm{Cl}^{-}, \mathrm{N}_3^{-}$

TS EAMCET 2020 (Online) 10th September Evening Shift

MCQ (Single Correct Answer)

-0

Which of the following statements is not true about Thomson's model of atom?

This model can be visualised as a pudding or watermelon of positive charge with plum or seeds as electrons embedded into it.

The mass of the atom is assumed to be uniformly distributed over the atom.

An atom possesses a spherical shape in which the positive charge in uniformly distributed.

This model could not explain the overall neutrality of the atom.

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