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