The motion of particles In different states is difficult to observe. A student used computer software to represent the movement of particles in the solid state. Which type of scientific model did the student use? A. a simulation because it imitates an intrinsic process in the molecule

B. a simulation because it helps visualize the orientation of atoms in the molecule

C. a 3-dimensional model because it helps visualize the orientation of atoms in the molecule

D. a 3-dimensional model because it imitates intrinsic processes in the molecule

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

the answer is d. 74.02