Isotopes

Eight.

The number of protons and electrons is the same.

You think probable to radioactive decay.

6C14 ---------> 7N14 + -1 e0

Beta particle is emitted and carbon changes into nitrogen

I suppose that the isotope formed is Am-245.

2

Isotopes of technetium haven't special names.

Caebon-14 is a radioactive isotope and can decay.

Polonium 212 has 84 protons and 128 neutrons. An alpha particle is 2 protons and 2 neutrons, so the daughter nucleus will have 82 protons and 126 neutrons, making it lead 208.

U-235

P-33

Sure. There is nothing to control that both hydrogen atoms are of the same isotope - which specific hydrogen atoms combine with an oxygen atom basically depends on chance. Thus, considering that about 1 out of 5000 hydrogen atoms is heavy hydrogen (deuterium), that means that about 1 out of 2500 water molecules will have one deuterium atom (since there are two options for a deuterium atom to attach; whereas only 1 out of 25 million (i.e., 5000 squared) will have TWO deuterium atoms.

And also molecules as HTO, DTO, T2O are possible (D is deuterium, T is tritium).

Typically 3% uranium-235, 97% uranium-238.

Radioactive isotopes have many uses:
- sources of energy
- tracers
- treatment of cancers
- sources of radiation
- components of instruments
- nuclear fuels
- nuclear bombs
and many others

238U

The type of element is decided by the number of protons in it's nucleus. Number of neutrons are either equal or more than number of protons. Mass of proton and neutron is almost equal and that of electron is almost negligible as compared to both of others. As number of neutrons differ, mass of the elements also differ. Though they have 'same' chemical properties. Such atoms with different mass are called Isotopes. If the number of neutron is more, then such Isotopes are having more mass (or weight.)

No, not all radioactive isotopes be used in radiometric dating. Some have very very short half lives and would entirely disappear before any useful period of time passed.

Isotopes are atoms of the same elements with different number of neutrons.

The hydrogen isotope with two neutrons is called deuterium. It is a heavier and stable form of hydrogen, commonly used in nuclear reactions and heavy water production.

210 total combined

Isotopes contain a different number of neutrons.

All of them.

If you think to stable isotope Ca-135 this have 80 neutrons.