Calcium chloride forms an ionic solid. How are the particles held together and arranged in the solid?
O A. Calcium chloride molecules are held together by covalent bonds in
a regular pattern.
O B. Calcium and chloride atoms are held together by metallic bonds in
an irregular way.
O C. Calcium and chloride atoms are held together by electrostatic
forces in a regular pattern.
O D. Calcium chloride molecules are held together by intermolecular
attractions in an irregular way.

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.

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