Your science team has discovered some elemental metals on the planet After testing each element, you have obtained the information given in the data chart below You have not yet been able to obtain the atomic masses In addition, these are preliminary tests, so the degree of accuracy is not high However, you now have enough information to analyse the periodic trends of these new elements Analyse any periodic trends that appear in the data Trends will be similar to those in Earths periodic table (HINT part of the list belongs to a group, and the other part belongs to a period) Explain the periodic trends (atomic radius, electronegativity, ionization energy, melting point) seen in the chart, as you go from A J How does your explanation correlate with Earths periodic table Based on your answers from a b, what elements are part of a group and which elements are part of a period Which data does not seem to fit the trend Can you suggest a possible explanation One of the geologists on your team finds some fossilized wood on the planet She attempts to find the age of the wood using carbon dating In carbon dating, the relative amounts of carbon isotopes are compared Since carbon isotopes decay at a regular rate, this information can be used to find the age of carbon compounds However, the isotopic ratios of carbon on this planet are 80 2 12 C, 19 3 13 C, and 0 5 14 C What is the average molar mass of carbon on the unknown planet Observations Atomic Radius (Nm) 0 164 Electronegativit lonization Energy (kJ mol) 632 Meltin g Point (K) 1801 1 37 0 180 1 20 614 1784 A B C D E 1 11 537 1188 I mulow 0 188 0 189 1 10 492 1330 0 183 1 12 523 1211 Silvery white turns yellow or pinkish in air Lustrous, silver, metallic Silvery white can be cut with a knife Silver metal radioactive Soft, silver, malleable, and ductile gives an intense yellow colour when used as a component of glass Bright silver, metallic gives a violet, wine red, or grey colour when used as a component of plastic The salts of the metal glow pale blue or green in the dark radioactive Bright silver stable in air absorbs infrared light when used as a component of glass Silver metal 0 182 1 13 532 1295 0 181 1 15 537 1321 G H 0 180 1 17 545 1352 C IQ 0 199 1 19 548 1099 J 0 180 Silver metal 1 20 596 1580 Sii

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Your science team has discovered some elemental metals on the planet. After testing each element, you have obtained the information given in the data chart

Your science team has discovered some elemental metals on the planet. After testing each element, you have obtained the information given in the data chart below. You have not yet been able to obtain the atomic masses. In addition, these are preliminary tests, so the degree of accuracy is not high. However, you now have enough information to analyse the periodic trends of these new elements.

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Analyse any periodic trends that appear in the data. Trends will be similar to those in Earths periodic table. (HINT: part of the list belongs to a group, and the other part belongs to a period)

Explain the periodic trends (atomic radius, electronegativity, ionization energy, melting point) seen in the chart, as you go from A-J.

How does your explanation correlate with Earths periodic table?

Based on your answers from a & b, what elements are part of a group and which elements are part of a period.

Which data does not seem to fit the trend? Can you suggest a possible explanation?

One of the geologists on your team finds some fossilized wood on the planet. She attempts to find the age of the wood using carbon dating. In carbon dating, the relative amounts of carbon isotopes are compared. Since carbon isotopes decay at a regular rate, this information can be used to find the age of carbon compounds. However, the isotopic ratios of carbon on this planet are 80.2% ¹²C, 19.3% ¹³C, and 0.5% ¹⁴C. What is the average molar mass of carbon on the unknown planet?

Observations Atomic Radius (Nm) 0.164 Electronegativit lonization Energy (kJ/mol) 632 Meltin g Point (K) 1801 1.37 0.180 1.20 614 1784 A B C D E 1.11 537 1188 I mulow 0.188 0.189 1.10 492 1330 0.183 1.12 523 1211 Silvery white; turns yellow or pinkish in air Lustrous, silver, metallic Silvery white; can be cut with a knife Silver metal; radioactive Soft, silver, malleable, and ductile; gives an intense yellow colour when used as a component of glass Bright silver, metallic; gives a violet, wine red, or grey colour when used as a component of plastic. The salts of the metal glow pale blue or green in the dark; radioactive. Bright silver; stable in air; absorbs infrared light when used as a component of glass. Silver metal 0.182 1.13 532 1295 0.181 1.15 537 1321 G H 0.180 1.17 545 1352 C-IQ 0.199 1.19 548 1099 J 0.180 Silver metal 1.20 596 1580 Sii