<span>Isotopes are atoms of the same element with the same number of protons and same number of electrons but with <span>different
number of neutrons. They differ in the number of neutrons that is why
they also differ in mass numbers. Since they have the same number of
protons, they have the same atomic number.
For instance, when the
nucleus of the isotope with a 68.926 amu, there are 30 protons and 39
neutrons in the nucleus. The best example for this is Zn (zinc-69
isotope) and Ga (gallium-69 isotope) which has 68.926 amu and 68.925 amu
respectively.
</span></span>
Answer:
hydroxide ion
Explanation:
The alkaline battery got this name because it has an alkaline electrolyte of potassium hydroxide.
The element that is a nonmetal, a gas, and has an element symbol that starts with the letter a is Ar (Argon).
Element Ar (Argon) is the third member of noble gases, in period 8, and makes up about 1% of the Earth's atmosphere. It has approximately the same solubility as oxygen and it is 2.5 times as soluble in water as nitrogen. It is an inert element that is colorless and odorless in both its liquid and gaseous forms.
Divide by 1000
145÷1000=0.145
Hope this will be helpful.
