the history of the modern periodic table 2

Question 1

in ______, through his work with x-rays, he determined the actual nuclear charge (atomic number) of the elements. he rearranged the elements in order of increasing atomic number

Answer 1

henry mosely
1913

Question 2

henry mosely

Answer 2

1887-1915

Question 3

why was henry moseley’s research halted?

Answer 3

when the british government sent him to serve as a foot soldier in WW1

Question 4

how did henry mosely die

Answer 4

he was killed in the fighting in gallipoli by a sniper’s bullet, at the age of 28

Question 5

after co-discovering 10 new elements, in 1944 he moved 14 elements out of the main body of the periodic table to their current location below the lanthanide series these became known as the actinide series

Answer 5

glenn t. seaborg

Question 6

glenn t. seaborg

Answer 6

1912-1999

Question 7

he is the only person to have an element named after him while still alive

Answer 7

glenn t. seaborg

Question 8

when elements are arranged in order of increasing atomic number, there is a periodic patter in their physical and chemical properties

Answer 8

periodic table

Question 9

each element is identified by its

Answer 9

symbols placed at the middle of the square, the atomic number and the atomic mass are also included

Question 10

the vertical columns are called

Answer 10

groups of families