The following expression s proposed: ("(t, p xi-a r t (x1-x) + 42 pxn (a. 10 pts) reason out what the value of a must be. a correct answer without proper justification gets no credit. (b. 10 pts) obtain an expression for g if you found a value for a in part (a), use that value, otherwise use the symbol a. - (c. 10pts) what is (d. 10 pts) if 1 m/mol and 3 mmol, calculate the mixture k for x/-0.4

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

since electrons are negative the answer is neagtaive