Statement I : `Zn^(2+)` is diamagnetic Statement II : The electrons are lost from 4s orbital to from `Zn^(2+)`
A
Statement I is true , Statement II is true , Statement II is the correct explanation of Statement I
B
Statement I is true , Statement II is true , Statement II is not the correct explanation of Statement I
C
Statement I is true , Statement II is false
D
Statement I is false , Statement II is false
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B
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(a). Assertion (A) is true, Reason (R) is also true, Reason (R) is the correct explanation for assertion (A). (b). Assertion (A) is true, Reason (R) is true, Reason (R) is not the correct explanation for Assertion (A). (c). Assertion (A) is true, Reason (R) is false. (d). Assertion (A) is false, Reason (R) is true. Q. Assertion (A): Zn^(2+) is diamagnetic. Reason (R): The electrons are lost from 4s-orbital to form Zn^(2+) .
Assertion : Fe^(2+) has 3de electronic configuration. Reason : Electrons are lost from 4s-orbital to form Fe^(2+) ion.
A: Zn (II) salts are diamagnetic R : Zn^(2+) ion has one unpaired electron.
If A is 2 x 2 invertible matrix such that A=adjA-A^-1 Statement-I 2A^2+I=O(null matrix) Statement-II: 2|A|=1 (i) Statement-I is true, Statement-II is true; Statement-II is a correct explanation for Statement-I (2) Statement-I is true, Statement-II is true; Statement-II is not a correct explanation for Statement-I. 3) Statement-I is true, Statement-II is false. (4) Statement-I is false, Statement-II is true.
Statement-I : There are two spherical nodes in 3s-orbital. Because Statement-II : There is no angular node in 3s-orbital.
Statement-I : Mg^(2+)+ZnSO_(4) rarr MgSO_(4)+Zn^(2+) Statement-II : More active metal can displace less active metal from its salt solution.
IIT-JEE PREVIOUS YEAR (CHEMISTRY)-D & F BLOCK ELEMENTS-Objective (Q-2)