Answer:
Atoms of the same element, containing the same number of protons, but different numbers of neutrons, are known as isotopes. Isotopes of any given element all contain the same number of protons, so they have the same atomic number (for example, the atomic number of helium is always 2(
Now in total the ion has 27 electrons, 30 protons and 35 neutrons
Answer:
MgF2 - Salt
H2SO4 - Acid
Explanation:
Arrhenius Definition
Arrhenius acid is a substance that dissociates in water to form hydroxide (H+) ions.
Arrhenius base is a substance that dissociates in water to form hydroxide (OH–) ions.
H+
OH-
S2-
O2-
MgF2 - Salt as no Hydrogen
H2SO4 - Acid as converts to HSO4- and H+ upon dissociation in water.
The only answer we can choose
<span>B.
energy needed to break chemical bonds.</span>
The correct answer is 4.
This is because, as you move farther across a periodic group (left to right), because gaining electrons becomes easier, thus increasing electronegativity and decreasing metallic properties.