If Zeff of element having atomic number 11 is 2.2, then Zeff of elements having atomic number 12 and atomic number 20 are respectively :-

(1) 2.85, 3.92

(2) 3.92, 2.85

(3) 2.2, 2.2

(4) None of the above

Concept Questions :-

Screening Effect
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


In scandium series, maximum distance between neutrons containing site and valence shell is of :-

(1) Sc

(2) Mn

(3) Fe

(4) Zn

Concept Questions :-

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Which of the following compound is isoelectronic with adduct of "Diborane and Ammonia" is :-

(1) Hydrogen peroxide

(2) Diborane (at absolute zero temp.)

(3) First member of alkyne series

(4) Diborance (at 10°C temp)

Concept Questions :-

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Which of the following ionisation energy order is NOT correct :-

(1) Cu+ > Cu+2

(2) Mn+2 > Mn+3

(3) N-3 > N

(4) All of the above

Concept Questions :-

Ionization Energy (IE)
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Which of the following would not proceed in the forward direction spontaneously?

(1)Si++ClSi+Cl+

(2) F+I-F-+I

(3) both

(4) none

Concept Questions :-

Ionization Energy (IE)
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Increasing order of the ionic radii and decreasing order of number of protons of the given isoelectronic species is :-

(1) Ca+2, K+, Cl-, S-2

(2) Cl-, Ca+2, K+, S-2

(3) S-2, Cl-, Ca+2, k+

(4) None of the above

Concept Questions :-

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


In which of the following has maximum EN :-

(1) C

(2) O

(3) B

(4) F

Concept Questions :-

Electronegativity
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


According to Gallis, Hanny and Smith, 50% covalent character in a molecule is related to:-

(1)EN=1.6-2.2

(2)DEN=1.7-2.2

(3)EN=0.8-1.1

(4)EN=0-1.6

 

Concept Questions :-

Electronegativity
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Allred Rochow scale is related to:-

(1) Electronegativity, radius and Z*

(2) resonance energy of molecule, Ionisation potential and electron affinity

(3) Bond polarity, diagonal relationship and periodicity

(4) None of the above

Concept Questions :-

Electronegativity
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Electronic configuration of Palladium is :-

(1) [Rn] 5f3 6d1 7s2

(2) [Rn] 5f5 6d1 7s2

(3) [Rn] 5f6d1 7s2

(4) None of the above

Concept Questions :-

Electronic Configuration
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level: