Answer:
A
Explanation:
i think A is correct answer because
A has 8 Electrons& Protons
and it's electronic configuration ns² np⁶.
which allow it to gain 2 electrons to reach stability.
Answer:
The answer is a compound.
it is a compound as it contains different elements
Explanation:
Answer:
The answer is "2.5 mole"
Explanation:
The reaction for producing
can be defined as follows:
Reaction:

According to the above reaction, to produce 2 moles of
we need 1 mole of nitrogen:
So, according to the question to produce 5.0 mole
the required
:

To produce 5.0 mole
we need 2.5 mole 
A football field is 0.001 km in length. Since the 1 is in the thousands place, you’d have to run back and forth (0.001 km) 1000 times.
0.001 x 1000 = 1