Answer:
zinc and lead or copper and tin
Explanation:
these elements react both as an acid as well as a base
Answer:
What are large, relatively flat areas? ... Why are coastal plains also called lowlands? ... What is a grassy wetland usually flooded with water? ... What rises steeply from the land around them? ... flat raised landform made up of nearly horizontal rocks that have been uplifted ... distances in degrees north or south the equator.
Explanation:
The reaction occurs in a similar way as magnesium does, but much less vigorous. Strong heating is required to make iron powder burn in oxygen. The reaction gives out a yellow showery sparks and produces a black solid. iron reacts with dilute hydrocloric acid to give iron chloride and hydrogen gas.
MgF is an ionic compound because it's bond is between a metal and a non-metal

Now, balance the equation:


in gaseous state exist as a diatomic molecule.