Question

1. _Na(s) + _H2(g) →
Need the reaction type!

Answer 1

synthesis reaction
the balanced equation would be:
2Na(s) + 1H2(g) -> NaH
it could be 2NaH2, but formulas that can be simplified should be simplified.

Answer 2

synthesis reaction

Step-by-step explanation:

Types of reactions:

A + B = AB synthesis

AB = A+B decomposition

AB + C = AC + B single replacement

AB + CD = AC + BD double replacement