Yes,
The element is radioactive due to the instability of its nucleus.
See the related question below for more information.
It isn't really an ELEMENT that is unstable, but an ISOTOPE. That means that in general, for the same element, some atoms will decay, and some will not - the difference being the number of neutrons in the nucleus.
unstable
As a radioactive and unstable element roentgenium can be dangerous.
Isotopes are atoms of a particular element with different numbers of neutrons. A radio isotope is an isotope that is radioactive because the nucleus is unstable.
It is a radioactive element.
It isn't really an ELEMENT that is unstable, but an ISOTOPE. That means that in general, for the same element, some atoms will decay, and some will not - the difference being the number of neutrons in the nucleus.
its nucleus is unstable
Radioactive isotope, or radioisotope.
unstable
A radioactive atom is an atom of an element with an unstable nucleus.
An element that has an unstable nucleus and therefore emits alpha, beta and/or gamma radiation.
An element that has an unstable nucleus and therefore emits alpha, beta and/or gamma radiation.
Radioactive elements have unstable nucleii. When an unstable nucleus decays it emits energy in the form of electromagnetic waves and heavy particles and in the process forms new nucleii.
As a radioactive and unstable element roentgenium can be dangerous.
the unstable nucleus of an atom
A radioactive atom is an atom of an element with an unstable nucleus.
it is unstable and decays to another element