The atomic radius can NOT be determined by measuring the distance between the at

Question

The atomic radius can NOT be determined by measuring the distance between the atoms in a metal. measuring the distance between the atoms in the solid state. measuring the distance between the atoms in a diatomic molecule and dividing it to half. measuring the size of the atoms directly in the gas phase. The bonding in the O_2 molecule iis best described as coordinate covalent. polar covalent. ionic. nonpolar covalent. Which of the following is NOT a property of a wave function? Each wave function phi is associated with a particular energy. The magnitude of the wave function is proportional to the phase of the wave at that point. A wave function uses three variables to describe the position of an electron. A wave function describes the electron distribution as a standing wave, which leads to a set of quantum numbers. For a covalent compound, the bond energy is the enthalpy change when a given bond is broken in the gas phase. the enthalpy change when the lattice forms. the energy required to remove an electron from the molecule. the enthalpy change when the solid compound is converted to the gas phase. What is the systematic name for Fe_3(PO_4)_2? Iron diphosphate Iron phosphate Iron(III) phosphate Iron(II) phosphate Iron can be determined in aqueous solution by titration with Na_2Cr_2O_7 using the reaction 14H^+ + 6Fe^2+ + Cr_2O_7^2- rightarrow 2Cr^3+ + 6Fe^3+ + 7H_2O. What is the molar concentration of iron if 38.4 ml of 0.0136 M Na_2Cr_2O_7 is required for the titration of a 25.00 ml sample of the solution? 0.0131 M 0.0209 M 0.00348 M 0.125 M

Explanation / Answer

19) Polarity in a covalent compound arises due to shifting of the share electron pair from their equilibrium position as aresult of electronegativity difference. In O2 both molecule each oxygen atom share two electron each forming a double bond and since it is a homonuclear molecule the share electron pair remains in the equilibrium position and hence it is a non polar covalent molecule.

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