question

law of octaves
(Discovered by?)

answer

(John Newland)
elements in a given row have similar properties that repeat every eight elements.

question

Problems w/Mendeleev's ;Periodic Table
(How many elements are included?)

answer

contained gaps
elements weren't in order of atomic mass
(63)

question

Henry Mosely's Way to Arrange Elements
(What else did he create?)

answer

By atomic number, not atomic mass

(the modern definition of atomic number)

question

periodic law

answer

Elements are arranged by thier atomic #s and elements with similiar properties occur regularly

question

valence electron

answer

Electrons in the last energy level

Unlock the answer

question

group (two other names)
(what do they have in common?)

answer

family/column
(the same number of valence electrons)

Unlock the answer

question

period (two other names?)
(what do they have in common?)

answer

series/row
(same number of occupied energy levels)

Unlock the answer

question

(Order of scientists who have made contributions to the periodic table?);
;
What did each do?

answer

Newland (law of octaves)
Mendeleev (arranged into table by atomic mass)
Mosely (rearranged by atomic number)

Unlock the answer

question

(how many natrual elements?)

answer

(92)

Unlock the answer

4.1 How are Elements Organized? – Flashcards

Unlock all answers in this set