University:
Campbell University
Course:
CHEM 111 | General Chemistry I
Academic year:

2019
Views:

374

Pages:

2
Author:

demianheles7al

More Periodic Table Trends Name:________________________ Draw the trend for ATOMIC RADIUS 1. Rank each of the following in order of INCREASING atomic radius a.) F, K, Br___F, Br, K___ b.) Os, Ni, Fe___Ni, Fe, Os___ 2. Rank each of the following in order of DECREASING atomic radius a.) Cl, Br, Ga___Ga, Br, Cl___ b.) Ca, Rb, C____Rb, Ca, C___ Draw the trend for IONIZATION ENERGY 3.) Rank each of the following in order of INCREASING ionization energy a.) O, S, Ge___Ge, S, O___ b.) Be, Ba, B____Ba, Be, B___ 4.) Rank each of the following in order of DECREASING ionization energy a.) Cl, Cu, Au___Cl, Cu, Au___ b.) Te, Sb, Xe____Xe, Te, Sb____ Draw the trend for ELECTRONEGATIVITY 5.) Rank each of the following in order of INCREASING electronegativity a.) Na, K, Ne___K, Na, Ne____ b.) Fr, Ca, Co___Fr, Ca, Co____ 6.) Rank each of the following in order of DECREASING electronegativity a.) As, Se, Sn___Se, As, Sn___ b.) Xe, Ru, Hf____Xe, Ru, Hf____ 7.An atom has a negative electron affinity. Circle all of the statements that might apply to this atom. a.) It may be a noble gas. b.) It becomes less stable when electron is added. c.) It becomes more stable when electron is added. d.) It is probably a metal. e.) It is probably a non-metal. f.) There is a release of energy when electron is added. g.) Energy is absorbed when electron is added. 1 8.) The table below gives the ionization energies for potassium, bromine, and calcium. Identify which element is which from the data given. Explain your answer in the space provided. ELEMENT 1 Ionization ELEMENT 2 Enthalpy energy number 1st 2nd 3rd 4th Ionization Enthalpy ݇‫ܬ‬ ) ݉‫݈݋‬ energy number 418.8 3052 4420 5877 1st 2nd 3rd 4th ( ELEMENT 1 is __K__. ELEMENT 3 Ionization Enthalpy ݇‫ܬ‬ ) ݉‫݈݋‬ energy number 1139.9 2103 3470 4560 1st 2nd 3rd 4th ( ELEMENT 2 is __Br__. ( ݇‫ܬ‬ ) ݉‫݈݋‬ 589.8 1145.4 4912.4 6491 ELEMENT 3 is __Ca__. Explanation: Answer – Bromine has the highest ionization energy for the first electron removal as it is the smallest atom so it holds on tighter and thus takes the most energy to remove. Therefore, it is element 2. Potassium is the element 1 as for it to lose a second electron would be very high energy as after losing the first electron it has become isoelectronic to a noble gas and thus is very stable. Place in order from smallest to largest atomic/ion radius: Fe Fe+2 Fe+1 Fe+2 Fe+1 Fe Place in order from smallest to largest atomic/ion radius: O O-2 O-1 O O-1 O-2 Place in order from smallest to largest atomic/ion radius: Na Na+1 Cl Cl Na+1 Na 9.) Put in order of increasing size (smallest to largest): K Cl-1 Ar S-2 Ar, Cl-1, S-2, K a.) Write the abbreviated electron configuration for each ion or atom: Answer – K - [Ar]4s1 b.) Group elements Cl-1 – [Ne]3s23p6 Ar – [Ne]3s23p6 S-2 - [Ne]3s23p6 Answer - Ar, Cl-1, S-2 are all isoelectronic 2