HomeTestsSearchRankProfile
mediumMCQChemistryChemistry
8 attempts0% success rate1 mark (−0.25)

Which of the following is the electron deficient molecule ?

  1. A
    B2H6
  2. B
    C2H6
  3. C
    PH3
  4. D
    SiH4

Solution & Step-by-step Explanation

Electron-deficient molecules are those that do not have enough electrons to form a complete octet around each atom. B2H6 (diborane) is an electron-deficient molecule because each boron atom is bonded to only four hydrogen atoms and has only six electrons in its valence shell, not enough to form a complete octet. In contrast, C2H6 (ethane), PH3 (phosphine), and SiH4 (silane) all have complete octets around their central atoms and are not electron-deficient.

Practice this question

Try it yourself before checking the explanation above.

Which of the following is the electron deficient molecule ?
A
B2H6
B
C2H6
C
PH3
D
SiH4

Share This Question

Inorganic Chemistry

Related Questions

mediumMCQ

Which of the following statements are true?A. Unlike Ga that has a very high melting point, Cs has a very low melting point.B. On Pauling scale, the electronegativity values of N and Cl are not the same.C. Ar, K^+, Cl^-, Ca^2+ , and S^2- are all isoelectronic species.D. The correct order of the first ionization enthalpies of Na, Mg, Al, and Si is Si > Al > Mg > Na.E. The atomic radius of Cs is greater than that of Li and Rb.Choose the correct answer from the options given below:

mediumMCQ

Match List I with List IIList I (Ion)A. Co^2+ B. Mg^2+ C. Pb^2+ D. Al^3+ List II (Group Number in Cation Analysis)I. Group-III. Group-IIIIII. Group-IVIV. Group-VIChoose the correct answer from the options given below:

hardMCQ

Predict the major product 'P' in the following sequence of reactions:

hardMCQ

Which of the following are paramagnetic?A. [NiCl_4]^2- B. Ni(CO)_4 C. [Ni(CN)_4]^2- D. [Ni(H_2O)_6]^2+ E. Ni(PPh_3)_4 Choose the correct answer from the options given below:

mediumMCQ

Given below are two statements:Statement I: Like nitrogen that can form ammonia, arsenic can form arsine.Statement II: Antimony cannot form antimony pentoxide.In the light of the above statements, choose the most appropriate answer from the options given below:

mediumMCQ

Which among the following electronic configurations belong to main group elements? A. [Ne] 3s^1 B. [Ar] 3d^3 4s^2 C. [Kr] 4d^10 5s^2 5p^5 D. [Ar] 3d^10 4s^1 E. [Rn] 5f^0 6d^2 7s^2

Ready for a Full Test?

Practice with timed mock tests and track your performance across Chemistry.

Browse TestsLeaderboard

Discussion