Match the following species with the correct number of electrons present in them: Species Number of Electrons ( i ) Be 2 + ( a ) 0 ( ii ) H + ( b ) 10 ( iii ) Na + ( c ) 2 ( iv ) Mg + ( d ) 11 ( e ) 4

( i - c ) , ( i i - a ) , ( i i i - b ) , ( i v - d )

( i - d ) , ( i i - c ) , ( i i - b ) , ( i v - a )

( i - a ) , ( i i - b ) , ( i i i - c ) , ( i v - d )

( i - e ) , ( i i - d ) , ( i i - a ) , ( i v - c )

On the basis of Bohr's model, the radius of the 3 rd orbit is

9 times the radius of 1 st orbit

Equal to the radius of 1 st orbit

3 times the radius of 1 st orbit

5 times the radius of 1 st orbit

If two particles A and B are moving with the same velocity, but wavelength of A is found to be double than that of B . Which of the following statements are correct?

Mass of B is one-fourth that of A

Match the following species with the correct number of electrons present in them: Species Number of Electrons ( i ) Be 2 + ( a ) 0 ( ii ) H + ( b ) 10 ( iii ) Na + ( c ) 2 ( iv ) Mg + ( d ) 11 ( e ) 4

( i - c ) , ( i i - a ) , ( i i i - b ) , ( i v - d )

( i - d ) , ( i i - c ) , ( i i - b ) , ( i v - a )

( i - a ) , ( i i - b ) , ( i i i - c ) , ( i v - d )

( i - e ) , ( i i - d ) , ( i i - a ) , ( i v - c )

E M B I B E

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Atomic Structure>AP EAPCET - 20 Aug 2021 Afternoon>Q 11

EASY

AP EAPCET

IMPORTANT

Earn 100

With increasing Principal Quantum number, the energy difference between adjacent energy levels in H-atom

57.14% studentsanswered this correctly

Important Questions on Atomic Structure

EASY

AP EAPCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Atomic Structure>AP EAPCET 2019 (21-Apr Shift-2)>Q 12

An element with mass number

181

contains

32 %

more neutrons as compared to protons. What is the symbol of that element?

MEDIUM

AP EAPCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Atomic Structure>AP EAPCET - 20 Aug 2021 Forenoon>Q 13

The number of protons, neutrons and electrons in

{}_{6}^{13}C

respectively are

MEDIUM

AP EAPCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Atomic Structure>AP EAPCET - 20 Aug 2021 Forenoon>Q 14

The masses of an electron, a proton and a neutron respectively will be in the ratio

MEDIUM

AP EAPCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Atomic Structure>AP EAPCET - 20 Aug 2021 Forenoon>Q 15

Match the following species with the correct number of electrons present in them:

Species	Number of Electrons
$(i) {Be}^{2 +}$	$(a) 0$
$(ii) H^{+}$	$(b) 10$
$(iii) {Na}^{+}$	$(c) 2$
$(iv) {Mg}^{+}$	$(d) 11$
	$(e) 4$

EASY

AP EAPCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Atomic Structure>AP EAPCET 2020 (Sep-23 Shift-1)>Q 16

Which among the following is a correct statement based on Heisenberg's uncertainty principle?

1

) It is impossible to detemine exact position and exact momentum of an electron simultaneously.

2

) It is applicable to even macroscopic objects.

3

) It is possible to detemine the exact position and momentum of an electron simultaneously.

4

) It is impossible to determine the exact position and momentum of macroscopic object simultaneously.

MEDIUM

AP EAPCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Atomic Structure>AP EAPCET 2018 (25-APR Shift-1)>Q 17

If uncertainity in the measurement of position and momentum of a microscopic object of mass

' m'

are equal, then the uncertainity in the measurement of velocity is given by the expression

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