Two elements in the same period have the same number of in their electron clouds.

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.