The lining of the esophagus is an example of a non-keratinized or moist stratified epithelium. Transitional. Transitional epithelia are found in tissues that stretch and it can appear to be stratified cuboidal when the tissue is not stretched or stratified squamous when the organ is distended and the tissue stretches.pithelium lines both the outside (skin) and the inside cavities and lumina of bodies. The outermost layer of human skin is composed of dead stratified squamous, keratinized epithelial cells.
Answers. Best Answer: For an alkali metal such as sodium, lithium, or potassium, there is only a single valence electron. In terms of electron orbitals, you would have 1s^2 ... n s^1, where n is any integer greater than one.
1 The alkaline-earth metals tend to lose two electrons to form M 2+ ions (Be 2+ , Mg 2+ , Ca 2+ , and so on). 2  These metals are less reactive than the neighboring alkali metal. 3  Magnesium is less active than sodium; calcium is less active than potassium; and so on. 4  These metals become more active as we go down the column.