AIEEE 2006 | Structure of Atom Question 206 | Chemistry

Uncertainty in the position of an electron (mass = 9.1 $$\times$$ 10^-31 kg) moving with a velocity 300 ms^-1, accurate upto 0.001% will be (h = 6.63 $$\times$$ 10^-34 Js)

1.92 $$\times$$ 10^-2 m

3.84 $$\times$$ 10^-2 m

19.2 $$\times$$ 10^-2 m

5.76 $$\times$$ 10^-2 m

AIEEE 2005

MCQ (Single Correct Answer)

-1

Of the following sets which one does NOT contain isoelectronic species?

$$BO_3^{3 - }$$, $$CO_3^{2 - }$$, $$NO_3^{- }$$

$$SO_3^{2 - }$$, $$CO_3^{2 - }$$, $$NO_3^{-}$$

$$CN^{- }$$, $$N_2$$, $$C_2^{2 - }$$

$$PO_4^{3 - }$$, $$SO_4^{2 - }$$, $$ClO_4^{ - }$$

AIEEE 2005

MCQ (Single Correct Answer)

-1

Pick out the isoelectronic structure from the following :

$$\eqalign{ & \left( i \right)\,\,\,\,\,\,C{H_3}^ + \cr & \left( {ii} \right)\,\,\,\,{H_3}{O^ + } \cr & \left( {iii} \right)\,\,\,N{H_3} \cr & \left( {iv} \right)\,\,\,\,C{H_3}^ - \cr} $$

$$(i)$$ and $$(ii)$$

$$(iii)$$ and $$(iv)$$

$$(i)$$ and $$(iii)$$

$$(ii), (iii)$$ and $$(iv)$$

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