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.
Saint Lucia (/seÉªnt ËluËÊÉ/; French: Sainte-Lucie) is a sovereign island country in the eastern Caribbean Sea on the boundary with the Atlantic Ocean. Part of the Lesser Antilles, it is located north/northeast of the island of Saint Vincent, northwest of Barbados and south of Martinique.