arsenic is a natural element and its in group 15 period 4 of the periodic is a transitional metal and its symbol on the periodic scale is (As) and the atomic number is 33 and its relative atomic mass is 74.92 and was first albertus magnus and is notoriously poisonous and its electrons shell is 2,8,18,5 and the density is 5.727 g-cm cubed and the triple point is at 1090 k (817 C) and its mohs scale is 3.5 rating
Lithium is a natural chemical element.
Boron is a natural chemical element.
Xenon is a natural chemical element.
Thorium is a natural chemical element, a radioactive metal.
Dubnium is an artificial chemical element.
it is a natural element
Cadmium is a natural chemical element.
Lithium is a natural chemical element.
Yes
it is not natural it is a synthetic element.
It is an example of natural chemical element, a metalloid.
It is an example of natural chemical element, a metalloid.
Aluminium is a natural chemical element.
Boron is a natural chemical element.
Xenon is a natural chemical element.
Thorium is a natural chemical element, a radioactive metal.
Beryllium is a natural chemical element.