Mechanical waves are classified according to transverse waves.
<h2>
Answer: Mg²⁺ & N³⁻</h2>
<h3>
Explanation:</h3>
Magnesium (group IIA) loses two electrons to become a cation. This is the most energetically favorable way for Magnesium to obtain a valence electron that is stable (octet). When an atom loses electrons it has a positive charge that matches the number of electrons lost.
Nitrogen (group VA) gains three electrons to become an anion. This is the most energetically favorable way for Nitrogen to obtain a valence electron that is stable (octet). When an atom gains electrons it has a negative charge that matches the number of electrons gained.
There are a couple of ways todetermine if a reaction is exothermic or endothermic. Endothermic meaning that heat is added to the reaction to make the reactants interact and exothermic meaning heat is released during the reaction between the two reactants.
In endothermic reactions you can find a triangle above the arrow.
Answer:
0
Explanation:
standard hydrogen is considered to be protium isotope of hydrogen that has one electron revolving around the nucleus containing one proton and no neutrons.
it's atomic number and mass number is 1
and number of neutrons = mass no. - atomic no.
= 1 - 1
=0
