Question 16 (5 points) elements in groups 3 through 12 on the periodic table are known as elements. question 16 options: 1gaseous 2noble 3radioactive 4transition

4. Transition metals

Explanation:

Transition metals differ from the other elements because their valence electrons can be found in more than one shell, specifically, in the last two shells. Another notable difference between transition metals and other elements on the periodic table is that they can have more than 8 electrons in their outermost shell. They can have up to 32 electrons.

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c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.