Question

question 17 (3 points) what is the correct ionic formula for magnesium bromide: mg2br mgbr mg br2 2mgbr mg2br2 question 18 (3 points) how many covalent bonds will a s (sulfur) atom make: 4 1 2 3 6

Explanation:

Step1: Determine magnesium ion charge

Magnesium (Mg) is in group 2 of the periodic - table and loses 2 electrons to form a $Mg^{2 + }$ ion.

Step2: Determine bromide ion charge

Bromine (Br) is in group 17 of the periodic - table and gains 1 electron to form a $Br^{-}$ ion.

Step3: Balance charges

To balance the charges in magnesium bromide, we need 2 bromide ions for every magnesium ion. So the ionic formula is $MgBr_{2}$.

Step4: Determine sulfur's valence electrons

Sulfur (S) is in group 16 of the periodic - table and has 6 valence electrons.

Step5: Calculate covalent bonds

It needs 2 more electrons to achieve an octet. So it can form 2 covalent bonds.

Answer:

Question 17: Mg Br₂
Question 18: 2