What is the electron configuration of a ground-state Nb2+ ion? Select one: a. 1s22s22p63s23p64s23d104p65s24d1 b. 1s22s22p63s23p64s23d104p64d3 c. 1s22s22p63s23p64s23d104p65s14d2 d. 1s22s22p63s23p64s23d104p64d5 e. 1s22s22p63s23p64s23d104p65s24d3

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.

What is the binding energy of a nucleus that has a mass defect of 5.81*10-^29 kg a 5.23*10-^12 j b 3.15* 10^12 j c 1.57*10-3 j d 9.44*10^20 j