Actinium is a natural element but because is extremely difficult to be separated from ores it is practically obtained artificially in laboratory.
Yttrium is a natural element found in the Earth's crust. It is not a synthetic element.
True. Compounds and mixtures can be either synthetic or natural. Synthetic compounds are created by humans in a laboratory while natural compounds are found in nature. Similarly, mixtures can also be either synthetic or natural based on their origin.
Ampicillin is a semi-synthetic antibiotic, meaning that it is derived from a natural source (penicillin) but has been chemically modified to enhance its effectiveness.
Lithium is a natural element that is found in various minerals and salts in the Earth's crust. It is not a synthetic element.
Well, darling, the opposite of "synthetic" is "natural." Synthetic means man-made, artificial crap, while natural means straight from Mother Nature's bosom. So if you want the real deal, go for natural every time.
Actinium is a natural chemical element but also can be prepared in laboratory.
Natural actinium exist in uranium and thorium minerals.
Actinium is a natural chemical element, radioactive; actinium is a decay product of uranium.
Actinium is a natural chemical element, it is not a man-made element.
Actinium is a natural chemical element but also can be prepared in laboratory.
Actinium is a natural chemical element (the isotope 227Ac) but also can be prepared by the intermediate of nuclear reactions.
227Ac (natural actinium) has 89 protons and electrons; also 138 neutrons.
There are 2 valence electrons in Actinium.
Actinium has 89 protons and 138 neutrons (the natural isotope 227Ac).
Actinium-227 is a natural isotope; the half life is 24,77 years. It is a emitter of alpha and beta.
Actinium is a member of the actinides family; actinium is a natural chemical element, metal, solid, extremely radioactive.
It is synthetic, but what we use to make concrete is natural AND synthetic.