Question

A compound consisting of 6 atoms of this element bound to lanthanum crystallizes to form a low temperature superconductor with a low work function. 40 atoms of this element can form spheres analogously to 60 atom carbon buckyballs. (10[1])An extremely sterically hindered D2h molecule features two atoms of this element that are bridged by two hydrogens. Adding this element to pinacol or catechol (10[1])leads to the formation of a 5-membered ring in which this element is bound to two oxygens and a hydrogen. Wade’s rules are used to predict the structure (10[1])of (10[1])compounds (10[3])containing this (10[1])element, which forms 3-center (10[1])2-electron bonds (10[1])with hydrogen. This element forms 3 bonds without possessing a lone pair, thus violating the octet rule. For 10 points, name this element (-5[1])with atomic number 5. (10[1])■END■ (10[3]0[1])

ANSWER: boron [accept B; prompt on boranes diborane or pinacolborane or catecholborane or borospherenes]
<Chemistry>
= Average correct buzz position

Summary

2024 ACF Regionals @ Nebraska01/27/2024Y6100%0%17%99.33
2024 ACF Regionals @ Imperial01/27/2024Y8100%0%0%95.38

Buzzes

PlayerTeamOpponentBuzz PositionValue
Maxwell YeCambridge AOxford A3710
Justin LeeImperial AImperial B6210
Sam MooreDurham AEdinburgh9010
Lewys JenkinsBristolCambridge C9110
Russell NipUBC AIowa A9210
Dimitris KalafatisTexas A&M BSorbonne9210
Kevin ParkClaremont ATexas A&M A9210
Ryan HumphreyTexas AAppalachian State9410
Jason ThieuMichigan State ARice A9810
Brendan BethlehemCambridge BWarwick10010
Owen AshbrookIowa BUW A123-5
Ian DewanKielOxford C12710
Isaac OlsonUW AIowa B12810
Aisling SkeetDurham BKCL1280
Haike LiuKCLDurham B12810
Ella WardeOxford BSheffield12810