the elements c and se have the same electronegativity value, 2.55. which of the following claims about the…

the elements c and se have the same electronegativity value, 2.55. which of the following claims about the compound that forms from c and se is most likely to be true?\na the carbon - to - selenium bond is unstable.\nb the carbon - to - selenium bond is nonpolar covalent.\nc the compound has the empirical formula cse.\nd a molecule of the compound will have a partial negative charge on the carbon atom.

the elements c and se have the same electronegativity value, 2.55. which of the following claims about the compound that forms from c and se is most likely to be true?\na the carbon - to - selenium bond is unstable.\nb the carbon - to - selenium bond is nonpolar covalent.\nc the compound has the empirical formula cse.\nd a molecule of the compound will have a partial negative charge on the carbon atom.

Answer

Brief Explanations:

  • Option A: Since carbon (C) and selenium (Se) have the same electronegativity (2.55), the carbon - selenium bond is non - polar covalent. Non - polar covalent bonds are stable as there is equal sharing of electrons. So, the claim that the bond is unstable is incorrect.
  • Option B: When two atoms have the same electronegativity, the electrons in the covalent bond are shared equally. This results in a non - polar covalent bond. Since ( \text{EN}(C)=\text{EN}(Se) = 2.55), the (C - Se) bond is non - polar covalent.
  • Option C: The empirical formula is the simplest whole - number ratio of atoms in a compound. For a compound formed by (C) and (Se), if it is (CSe), we need to check if there are simpler ratios. But in reality, based on bonding (each (C) has 4 valence electrons and each (Se) has 6 valence electrons), the formula is more likely (CSe_2) (using the criss - cross method for valence electrons: (C^{4+}) and (Se^{2 -})). So, the claim of empirical formula (CSe) is wrong.
  • Option D: In a polar covalent bond (where ( \Delta\text{EN}\neq0)), there is a partial negative charge ((\delta-)) on the more electronegative atom and a partial positive charge ((\delta+)) on the less electronegative atom. Since ( \Delta\text{EN}(C - Se)=0), there are no partial charges on either (C) or (Se) atoms.

Answer:

B. The carbon - to - selenium bond is nonpolar covalent.