Which of the following is true about alkali metals?
they do not participate in the same types of reactions
they all have different numbers of valence of electrons
their physical properties are very different
they tend to form ions with a 1+ charge
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Alkali metal, any of the six chemical elements that make up Group 1 (Ia) of the periodic table—namely, lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
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