Which of the following is true about alkaline earth metals? A. they have one valence electron B. they have two valence electrons C. they have three valence electrons D. they have four valence electrons

What is the main purpose of patent attorneys? defend the company against legal claims manage financial investments invent new products protect rights to new products and processes

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.