1
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Assertion : $$\mathrm{S}_2 \mathrm{O}_7^{2-}$$ and $$\mathrm{Cr}_2 \mathrm{O}_7^{2-}$$ both exist.

Reason : Both have same valence electrons.

A
If both assertion and reason are true and reason is the correct explanation of assertion.
B
If both assertion and reason are true, but reason is not the correct explanation of assertion.
C
If assertion is true, but reason is false.
D
If both assertion and reason are false.
2
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Assertion : $$\mathrm{Yb}^{2+}$$ is more stable in compare to $$\mathrm{Gd}^{+2}$$.

Reason : The electronic configuration of GD is $$[\mathrm{Xe}] 4 f^7 5 d^2 6 s^2$$.

A
If both assertion and reason are true and reason is the correct explanation of assertion.
B
If both assertion and reason are true, but reason is not the correct explanation of assertion.
C
If assertion is true, but reason is false.
D
If both assertion and reason are false.
3
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Assertion : $$d^5$$ configuration is more stable than $$d^4$$.

Reason : $$d^5$$ has more exchange energy as compared to $$d^4$$ because 10 and 6 exchanges are possible in $$d^5$$ and $$d^4$$ respectively.

A
If both assertion and reason are true and reason is the correct explanation of assertion.
B
If both assertion and reason are true, but reason is not the correct explanation of assertion.
C
If assertion is true, but reason is false.
D
If both assertion and reason are false.
4
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

The correct order of spin only magnetic moment (in BM) for $$\mathrm{Mn}^{2+}, \mathrm{Cr}^{2+}$$ and $$\mathrm{Ti}^{2+}$$ ions is

A
$$\mathrm{Mn}^{2+}>\mathrm{Ti}^{2+}>\mathrm{Cr}^{2+}$$
B
$$\mathrm{Ti}^{2+}>\mathrm{Cr}^{2+}>\mathrm{Mn}^{2+}$$
C
$$\mathrm{Mn}^{2+}>\mathrm{Cr}^{2+}>\mathrm{Ti}^{2+}$$
D
$$\mathrm{Cr}^{2+}>\mathrm{Ti}^{2+}>\mathrm{Mn}^{2+}$$
AIIMS Subjects
EXAM MAP