1
TS EAMCET 2022 (Online) 20th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

Assertion (A) Mo has the ground state electronic configuration $4 d^5 5 s^1$.

Reason (R) Mo has the highest exchange energy among the second row transition elements.

The correct option among the following is

A

(A) is true, (R) is true and (R) is the correct explanation for (A).

B

(A) is true, (R) is true but (R) is not the correct explanation for (A).

C

(A) is true but (R) is false.

D

(A) is false but (R) is true.

2
TS EAMCET 2022 (Online) 20th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following sequence is correct for decreasing order of ionic radius?

A

$\mathrm{I}^{-}>\mathrm{Se}^{2-}>\mathrm{Br}^{-}>\mathrm{O}^{2-}>\mathrm{F}^{-}$

B

$\mathrm{Se}^{2-}>\mathrm{I}^{-}>\mathrm{Br}^{-}>\mathrm{F}^{-}>\mathrm{O}^{2-}$

C

$\mathrm{I}^{-}>\mathrm{Se}^{2-}>\mathrm{O}^{2-}>\mathrm{Br}^{-}>\mathrm{F}^{-}$

D

$\mathrm{Se}^{2-}>\mathrm{I}^{-}>\mathrm{Br}^{-}>\mathrm{O}^{2-}>\mathrm{F}^{-}$

3
TS EAMCET 2022 (Online) 20th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The successive ionisation energies (starting from the 1 st ) of an element are $801,2430,3660,25,000$ and $32,800 \mathrm{~kJ} \mathrm{~mol}^{-1}$, respectively. The element is

A

B

B

C

C

O

D

N

4
TS EAMCET 2022 (Online) 20th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The compounds with $s p^2$ hybridised central atom among the following are

(A) $\mathrm{H}_2 \mathrm{CO}_3$

(B) $\mathrm{SiF}_4$

(C) $\mathrm{BF}_3$

(D) $\mathrm{HClO}_2$

A

A and C only

B

A and B only

C

C and D only

D

A, B, C and D

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