The silver reacted with the oxygen in the air, this chemical reaction caused it to tarnish.
<span>Mn(HPO4)2 - managanese (II) monohydrogen phosphate ion</span>
Answer:
Helium
Explanation:
Atomic radii vary in a predictable manner across the periodic table. As can be seen in the figures below, the atomic radius increases from top to bottom in a group and decreases from left to right over a period of time. Helium is therefore the smallest element, and francium is the largest.
if you were to fold a piece of paper into a bunch of pieces.
Explanation:
its just a different shape but it's still the same piece of paper
Answer:
⁵⁸Fe
Explanation:
mass number of the isotope = number of protons + number of neutrons
mass number of the isotope = 26 + 32 = 58 a.m.u
a.m.u - atomic mass units
Knowing that the element have 26 protons and 26 electrons it have to be an isotope of iron.
⁵⁸Fe