 # Question & Answer: 18) An element has the following Ionization Energies (in kJ/mol): IE1 = 786 IE2 = 1,820 IE3 =…..

18) An element has the following Ionization Energies (in kJ/mol): IE1 = 786 IE2 = 1,820 IE3 = 2,910 IE4 = 4,560 IE5 = 16,600 IE6 = 20,100 How many valence electrons does the neutral atom have? 19) A sample of copper metal, absorbs 50.0 J of heat, upon which the temperature of the sample increases from 22.0°C to 37.5°C. If the specific heat of copper is 0.385 J/g*K, what is the mass of the sample? 20) What is the valence electron configuration for the element in Period 4, Group 6A?

19)

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A sample of copper metal, absorbs 50.0 J of heat, upon which the temperature of the sample increases from 22.0°C to 37.5°C. If the specific heat of copper is 0.385 J/g*K, what is the mass of the sample?

20)

What is the valence electron configuration for the element in Period 4, Group 6A?

19. 