Answer:
The correct answer is "the Lewis concept of acids and bases".
Answer:
the element is fluorine
Explanation:
for the future, add up the little dots- which are electrons and the total of the dots is the atomic number, the little number on the periodic table.
Answer: 57 neutrons
Explanation: Ruthenium has an atomic number of 44, meaning it has 44 electrons, 44 protons, and 57 neutrons.
From the bottom to top in groups and increases from left to right across periods
