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Recent questions tagged physical-chemistry

The hybridisation in both$CH_4$ and $NH_3$ is $sp^3$ .Yet $CH_4$ is tetrahedral and $NH_3$ is of pyramidal shape because

asked Mar 6, 2014 by sreemathi.v

1 answer

The number of $\sigma$ and $\pi$-bonds between two carbon atoms in $CaC_2$ is

asked Mar 6, 2014 by sreemathi.v

1 answer

The incorrect combination among the following is

asked Mar 6, 2014 by sreemathi.v

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Which of the following species has two non-bonded electron pairs on the central atom?

asked Mar 6, 2014 by sreemathi.v

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The correct one among the following statements about $N_2$ is

asked Mar 6, 2014 by sreemathi.v

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The highest occupied molecular orbital in HF is

asked Mar 6, 2014 by sreemathi.v

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Among the following the paramagnetic compound is

asked Mar 6, 2014 by sreemathi.v

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The species having bond order different from that in CO is

asked Mar 6, 2014 by sreemathi.v

1 answer

Both $[Ni(CO)_4]$ and $[Ni(CN)_4]^{2-}$ are diamagnetic.The hybridisation of nickel in these complexes ,respectively are

asked Mar 6, 2014 by sreemathi.v

1 answer

The species having pyramidal shape is

asked Mar 6, 2014 by sreemathi.v

1 answer

Based on VSPER theory,the number of 90 degree F-Br F angles in $BrF_5$ is

asked Mar 6, 2014 by sreemathi.v

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Stability of the species $Li_2,Li_2^-$ and $Li_2^+$ increases in the order

asked Mar 6, 2014 by sreemathi.v

1 answer

According MO theory,which of the following species has the shortest bond length?

asked Mar 6, 2014 by sreemathi.v

1 answer

The hybridisation of orbitals of N atoms in $NO_3^-,NO_2^+$ and $NH_4^+$ are respectively

asked Mar 6, 2014 by sreemathi.v

1 answer

Which of the following is not isoelectronic?

asked Mar 6, 2014 by sreemathi.v

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Which of the following is the correct order of their stability?

asked Mar 6, 2014 by sreemathi.v

1 answer

Which atoms in $H_2O$ and $ClF$ are negatively charged

asked Mar 6, 2014 by sreemathi.v

1 answer

The bond order and magnetic behaviour of $He_2^{2+}$ are respectively

asked Mar 6, 2014 by sreemathi.v

1 answer

Which of the following molecule has the highest dipole moment

asked Mar 6, 2014 by sreemathi.v

1 answer

The number of $\sigma$ and $\pi$ bonds in $1,3$-butadiene

asked Mar 5, 2014 by sreemathi.v

1 answer

The maximum $'S'$ character is in

asked Mar 5, 2014 by sreemathi.v

1 answer

The hybridisation of Sn in $SnCl_6^{2-}$ is

asked Mar 5, 2014 by sreemathi.v

1 answer

Lewis Octet rule was failed ,to explain the following structure of molecule

asked Mar 5, 2014 by sreemathi.v

1 answer

The number of outer electron in $N_3^-$ are

asked Mar 5, 2014 by sreemathi.v

1 answer

The hybridisation of central 'O' atom in $O_3$ molecule is

asked Mar 5, 2014 by sreemathi.v

1 answer

The number of $\sigma$-bonds and $\pi$-bonds in $XeO_4$ are

asked Mar 5, 2014 by sreemathi.v

1 answer

Which one of the following statement is correct for $CsBr_3$?

asked Mar 5, 2014 by sreemathi.v

1 answer

The square pyramidal molecular shape is adopted by

asked Mar 5, 2014 by sreemathi.v

1 answer

Which one of the following is the least stable compound?

asked Mar 5, 2014 by sreemathi.v

1 answer

Which one of the following is the smallest in size?

asked Mar 5, 2014 by sreemathi.v

1 answer

The number of nodal planes in $d_{xy}$ orbital is :

asked Mar 5, 2014 by sreemathi.v

1 answer

The number of nodal planes in a $'p_y'$ orbital is

asked Mar 5, 2014 by sreemathi.v

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Which of the following will have the molecular shape that is trigonal bipyramidal?

asked Mar 5, 2014 by sreemathi.v

1 answer

Of the following molecules the only one which is not an exception to the octet rule is :

asked Mar 5, 2014 by sreemathi.v

1 answer

In which of the following compounds do the bonds have the largest percentage of ionic character?

asked Mar 5, 2014 by sreemathi.v

1 answer

$PCl_5$ in solid state splits into :

asked Mar 5, 2014 by sreemathi.v

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The geometry of $H_2S$ and its dipole moment are

asked Mar 5, 2014 by sreemathi.v

1 answer

Every $H_2O$ molecule is surrounded by .............$H_2O$ molecules:

asked Mar 5, 2014 by sreemathi.v

1 answer

Buckminsterfullerene is :

asked Mar 5, 2014 by sreemathi.v

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Pick out among the following species not isoelectronic with $CO_2:$

asked Mar 5, 2014 by sreemathi.v

1 answer

Which of the following is not true for resonance :

asked Mar 5, 2014 by sreemathi.v

1 answer

Which of the following group shows pseudo inert gas configuration

asked Mar 5, 2014 by sreemathi.v

1 answer

Which of the following is the correct order of lattice energy

asked Mar 5, 2014 by sreemathi.v

1 answer

Which of the following is correct order for the stability of the divalent cations

asked Mar 5, 2014 by sreemathi.v

1 answer

Which of the following is a polar solvent

asked Mar 5, 2014 by sreemathi.v

1 answer

Bond order is directly proportional to

asked Mar 5, 2014 by sreemathi.v

1 answer

The number of lone pairs in $XeF_2$

asked Mar 5, 2014 by sreemathi.v

1 answer

The geometry and bond angles of $IF_7$ respectively

asked Mar 5, 2014 by sreemathi.v

1 answer

The hybridisation of $XeOF_4$ molecule is

asked Mar 5, 2014 by sreemathi.v

1 answer

The hybridisation and geometry of $SO_4^{2-}$ respectively

asked Mar 5, 2014 by sreemathi.v

1 answer

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