Which of the following chemist

* Arranged elements by increasing mass

* Noticed repetition of properties every eighth element

* Created the law of octaves

• Lothar Meyer

• Dmitri Mendeleev

• Henry Moseley

• John Newlands

Which of the following chemist best

* Demonstrated connection between atomic mass and elements' properties

* Arranged elements in increasing atomic mass

• John Newlands

• Dmitri Mendeleev

• Lothar Meyer

• Henry Moseley

Which of the following chemist

* Demonstrated connections between atomic mass and elements' properties

* Arrange elements in increasing atomic mass order

* Predicted the existence + Properties of undiscovered elements (scandium, gallium, germanium)

• Dmitri Mendeleev

• Henry Moseley

• John Newlands

• Lothar Meyer

Which of the following chemist

* Discovered that atoms have a unique number of protons in their nuclei

* Arranged elements in increasing atomic number, which resulted in a periodic pattern of properties

• Henry Moseley

• Dmitri Mendeleev

• John Newlands

• Lothar Meyer

The statement that there is a periodic repetition of chemical and physical properties of the elements when they are arranged b y increasing atomic number

• Periodic table

• Periodic law

• Period

groups are

• vertical/columns

• horizontal/rows

periods are

• vertical/columns

• horizontal/ rows

elements in groups 1,2 and 13-18 are

• transitional elements

• main group/representative elements

elements in groups 3-12 are

• transitional elements

• main group/representative elements

most representative elements and all transition elements are

• metalloids

• metals

• nonmetals