Isotopes

Potassium is the most malleable of these. However, there term can't be applies to fluorine, since it is a gas.

Some isotopes are radioactive, some are not.

nope, just neutrons

It is impossible to write in WikiAnswers the correct symbol; as an example vanadium-51, the most known isotope:
51 as superscript, 23 as subscript and to right V.

Same number of protons, different number of neutrons.

The reaction is:
Po-216----------------alpha particle-----------------Pb-212

To calculate the atomic mass of chlorine using its naturally occurring isotopes, you can use the formula:

Atomic mass = (abundance of isotope 1 × atomic mass of isotope 1) + (abundance of isotope 2 × atomic mass of isotope 2).

In this case, you would multiply the atomic mass of each isotope by its respective abundance (expressed as a decimal) and sum the results to find the weighted average atomic mass of chlorine.

Isotopes have different half lives; the importance of this value depends on the specific application or problem.

Mercury

If the isotope existed, it would have 16 neutrons.

The emission spectrum of sodium shows two peaks, primarily due to the presence of two closely spaced energy levels associated with its electron transitions, specifically the D-lines (D1 and D2) resulting from transitions between the 3p and 3s energy levels. In contrast, other elements may have transitions that result in a single peak if their energy levels are further apart or if they lack multiple closely spaced transitions. Sodium's unique electron configuration and interactions lead to these distinct spectral lines, which are characteristic of its atomic structure.

Iodine is an element. It comes in only one form I-127 so there are no isotopes.

They have the same number of protons in the nucleus and same number of electrons surrounding the nucleus.

The atomic number is the same for the all isotopes of a chemical element.

The isotope iodine-122 has 53 protons and electrons and 69 neutrons.

Carbon-14 dating is the measurement of an object's age by comparing the amount of carbon-14 to the amount of carbon-12 and carbon-13 present in the sample.

19F is the atomic symbol for fluorine-19.

Hydrogen atom have three isotope which is hydrogen , deuterium , and tritium.

thyroid

Pure water is H2O chemically. There is no fluorine in it. However, in fluoride ions can be present as impurity and they have the formula F- with -1 charge on fluorine.

Assuming a idealized double displacement reaction.

2LiCl + Mg(OH)2 --> MgCl2 + 2LiOH

carbon-14

The atoms are like any other atom, the electron charge and proton charge cancel each other and the varying numbers of neutrons have no charge.