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Three elements are in the same row of the periodic table. Element 1 has a boiling point of 1135ËšF. Element 2 has a boiling point of Ë— 244.1ËšF. Element 3 has a boiling point of 5275ËšF. Compare the boiling points of each of the elements. Use the trends from the activity to describe their relative locations to each other on the periodic table.

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Answer:

Period, 4, Boiling point, 2913°C, 5275°F, 3186 K ; Block, d, Density (g cm−3), 8.90 ; Atomic number, 28, Relative atomic mass, 58.693.

Element Uranium (U), Group 20, Atomic Number 92, f-block, Mass 238.029. Sources, facts, uses ... Group, Actinides, Melting point, 1135°C, 2075°F, 1408 K.

krypton ; atomic weight, 83.798 ; melting point, −157.4 °C (−251.3 °F) ; boiling point, −153.4 °C (−244.1 °F) ; density (1 atm, 0 °C [32 °F]), 3.733 g/litre

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