| 11. | Valence 3 is dominant in all subsequent elements up to lawrencium ( with the possible exception of nobelium ).
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| 12. | Long-lived isotopes of nobelium and isotopes of lawrencium ( and of heavier elements ) have relatively short half-lives.
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| 13. | Chemically, scandium, yttrium and lutetium ( and presumably lawrencium ) behave like trivalent versions of the group 1 2 metals.
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| 14. | Such elements include lawrencium, rutherfordium, seaborgium, bohrium, and roentgenium, but not mendelevium, nobelium, or copernicium.
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| 15. | 1969 studies on the element showed that lawrencium reacted with chlorine to form a product that was most likely the trichloride LrCl 3.
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| 16. | Since Einsteium and Lawrencium are man made and break down quickly, you could replace them with Technetium and a stick of gum.
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| 17. | In 1965, 18 O . Thus IUPAC recognized the nuclear physics teams at Dubna and Berkeley as the co-discoverers of lawrencium.
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| 18. | However, lawrencium is an exception, since its last electron is transferred to the 7p 1 / 2 subshell due to relativistic effects.
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| 19. | Besides, one of the synthesis reactions for lawrencium, discovered by scientists at Berkeley and Dubna, included bombardment of 243 Am with 18 O.
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| 20. | The half-lives of lawrencium isotopes mostly increase smoothly from 252 Lr to 266 Lr, with a dip from 257 Lr to 259 Lr.
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