問題一覧
1
First man made element
Tc (technetium)
2
Particle accelerators also can describe as a ___?
magnet
3
processing transforming one element into another element
transmutation reaction
4
Elements with atomic no. Beyond 103
Superheavy elements
5
American physicist synthesized element with atomic no. 43 using linear particle accelerators
Ernest Lawrence
6
Alternating electric field that moves in spiral path
Cyclotron
7
Carried out a nuclear transmutations in 1919
Earnest Rutherford
8
What kind of charged are like pool repels
(+)(+)
9
Russian chemist Classified elements based on atomic number
Dmitri Mendeleev
10
First discovery of unstable element no. 84-Po_Polonium
Marie curie and Pierre Curie
11
Produced by bombarding....
Super Heavy elements
12
Discovered element no.94(Pu-Plutonium)
Seaborg,McMillan,Kennedy & Waht
13
Number 45 & 85 were synthesized using___?
particle accelerators
14
Identifying elements by shooting electon
X-Ray Spectroscopy
15
Breakdown product of uranium
Element 87(Francium)
16
Discovery of element 85-Astatine
Dale Corson.K.Mackenzie,Emilio Segre
17
From the Greek word “Astatos” meaning unstable
Element 85-Astatine
18
Particle accelerators that uses alternating electric field
Cyclotron
19
A very useful tool in characterizing elements
X-Ray Spectroscopy
20
Elements greater than atomic no. 92
transuranium elements
21
Stated that the Atomic Number of proton in an atom determines the properties of an element
Henry-Gwyn-Jeffrey Moseley
22
An English Physicist
Henry Gwyn-Jeffrey Moseley
23
Device speed up the protons to overcome repulsion
particle accelerators
24
First produced transuranium element Np(Neptunium )
Edwin McMillan
25
Decay product of fission of uranium
Element-61 (Promethium)