Magnesium (mg) will have chemical properties most like (2 points) manganese (mn). calcium (ca). sodium (na). aluminum (al).

Option (b) is the correct answer.

Explanation:

Elements that belong to same group tend to show similar chemical properties because they contain same number of valence electrons.

For example, magnesium is a group 2 element that has atomic number 12 and its electronic distribution is 2, 8, 2.

On the other hand, calcium is also group 2 element that has atomic number 20 and its electronic distribution is 2, 8, 8, 2.

Whereas sodium is a group 1 element which has just one valence electron. And manganese is a transition element that can lose up to 7 valence electrons.

Therefore, we can conclude that both magnesium and calcium will show alike chemical properties.

n2(g) + 3h2-> 2nh3(g)   this is the balanced equation

note the mole ratio between n2, h2 and nh3.   it is 1 : 3 : 2   this will be important.

moles n2 present = 28.0 g n2 x 1 mole n2/28 g = 1 mole n2 present

moles h2 present = 25.0 g h2 x 1 mole h2/2 g = 12.5 moles h2 present

based on mole ratio, n2 is limiting in this situation because there is more than enough h2 but not enough n2.

moles nh3 that can be produced = 1 mole n2 x 2 moles nh3/mole n2 = 2 moles nh3 can be produced

grams of nh3 that can be produced = 2 moles nh3 x 17 g/mole = 34 grams of nh3 can be produced

note:   the key to this problem is recognizing that n2 is limiting, and therefore limits how much nh3 can be produced.

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .