The utility of A-values can be generalized for use outside of cyclohexane conformations. A-values can help predict the steric effect of a substituent. In general, the larger a substituentâs A-value, the larger the steric effect of that substituent. Methyl has an A-value of 1.74 while tert-butyl has an A-value of ~5. Because the A-value of tert-butyl is higher, tert-butyl has a larger steric effect than methyl. This difference in steric effects can be used to help predict reactivity in chemical reactions.
Turner Beach in Antigua. Antigua (/Ã¦nËtiËÉ¡É/ an-TEE-ga), also known as Waladli or Wadadli by the native population, is an island in the West Indies. It is one of the Leeward Islands in the Caribbean region and the main island of the country of Antigua and Barbuda. Antigua and Barbuda became an independent state within the Commonwealth of Nations on 1 November 1981.
Encompassing 108 square miles of beautiful coastline, Antigua is one of the top Caribbean vacation destinations, offering 365 white sand beaches, and a wide array of entertainment. There is always something exciting happening on Antigua. Sport is a major part of Antiguan life â from world-class regattas such as Antigua Sailing Week and Antigua Classic Yacht to topnotch Cricket, to some of the best fishing and kite surfing on the planet, the options for an active holiday are limitless.