Select the shortest bond in the following group

In which set are all three species isoelectronic?

The complete combustion of acetone (C₃H₆O) is shown below: C3H6O+4O2→3CO2+3H2O Using the bond enthalpies provided, estimate the heat of combustion (ΔH°) of acetone in kJ/mol. Bond Enthalpy (kJ/mol) C–H 412 C–C 348 C=O (in ketones) 743 O=O 498 C=O (in CO₂) 799 O–H 463

What is the abbreviated orbital diagram for S?

What is the formal charge on the C atom in CN- ?

Portions of electromagnetic waves M, N, and P are represented below (not drawn to scale):

A compound has a high melting temperature, does not conduct electricity in the solid state,  and is brittle. What type of bonding does this compound mostly experience?

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