Answer:
exemples of elements with 1 valence electron: Hydrogen, lithium, potassium.
exemples of elements with 2 valence electrons: magnessium, calcium.
boron has 3 valence electrons. Phosphorus has 5 valence electrons.
carbon has 4 valence electrons.
exemples of elements with 5 valence electrons: Phosphorus, nitrogen
exemples of elements with 7 valence electrons: fluorine, chlorine
exemples of elements with 8 valence electrons: helium, argon
Explanation:
the easiest way to know the number of electrons are by the number of the group so 14 is 4, 16 is 6.
The reaction of hydrochloric acid and sodium hydroxide is a neutralization reaction wherein a mixture of acid and base produces salt, water, and energy in the form of heat. A neutralization reaction is exothermic, thus producing heat. This is why the beaker felt warm to the touch.
I would say it’s ‘laws are based on complex theories’.
A scientific law predicts the outcome, while a theory presents a possible explanation to why this outcome is. A law is based of a theory that supports the most data.
Answer:
56 is the mass
Explanation:
You would add 26 and 30(the protons and neutrons). I didn't add the electrons because they are so small their mass is negligible in this situation.
