What are trans-uranic elements?

Question

i. What are trans-uranic elements?

ii. Write their names.

Answer 1

i. Transuranic elements are the man-made elements with atomic number higher than 92 (the atomic number of uranium). These elements are prepared by nuclear reactions which involve transformation of naturally occuring elements.

ii. The elements from atomic numbers 104 (Rf) to 112 (Uub) are identified. Elements upto atomic number 118 (Uuo) are synthesized. 

They are listed in the following table.

Sr. no.	Name	Symbol	Atomic number
1.	Neptunium	Np	93
2.	Plutonium	Pu	94
3.	Americium	Am	95
4.	Curium	Cm	96
5.	Berkelium	Bk	97
6.	Californium	Cf	98
7.	Einsteinium	Es	99
8.	Fermium	Fm	100
9.	Mendelevium	Md	101
10.	Nobelium	No	102
11.	Lawrencium	Lr	103
12.	Rutherfordium	Rf	104
13.	Dubnium	Db	105

 

Sr. no.	Name	Symbol	Atomic number
14.	Seaborgium	Sg	106
15.	Bohrium	Bh	107
16.	Hassium	Hs	108
17.	Meitnerium	Mt	109
18.	Darmstadtium	Ds/Uun	110
19.	Rontgenium/Unununium	Rg/Uuu	111
20.	Copernicium/Ununbium	Cn/Uub	112
21.	Ununtrium	Uut	113
22.	Ununquadium	Uuq	114
23.	Ununpentium	Uup	115
24.	Ununhexium	Uuh	116
25.	Ununseptium	Uus	117
26.	Ununoctium	Uuo	118