Calculate the mass of the elements in 30.5 grams of aluminum sulfite

The molar mass of Aluminium sulphite Al2(SO3)3.

Explanation:

To calculate the mass of the Aluminium Sulphite Al2(SO3)3

 Two aluminium atoms: 2(26.98) + (32.07 + 48.00) 3

                                    = 53.96 + (80.07) 3

                                     =294.17 g/mol

 1 mole = 6.022*10²³ particles

The mass of the element (m) = M * n

                                               = 294.17 * 30.5

                                               = 8,972.18 g

Thus the mass of the element in 30.5 grms of Aluminium sulphite is 8.972g.

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.