the periodic table

1. How are elements organized in the periodic table ?

• Alphabetically

• Based on physical and chemical properties

• Increasing number of electrons

• Most reactive to least reactive

Most elements on the periodic table are classified as

• gases

• metalloids

• metals

• nonmetals

Groups on the periodic table are arranged

• Vertically

• Horizontally

• Diagonally from bottom right corner

• Diagonally from top right corner

Which group on the periodic table is the most reactive ?

• group1

• group 2

• group 13

• group 18

How many neutrons does Chlorine have

• 17

• 36

• 35

• 18

How many periods are there in the periodic table ?

• 7

• 9

• 10

• 18

A neutral atom of has 52 electrons

• chromium

• tellurium

• manganese

• antimony

Each horizontal row on the periodic table is called a what ?

• group

• raw

• period

• family

Who arranged the periodic table of elements by the atomic mass ( or mass number ) ?

• Democritus

• John Dalton

• Henry Moseley

• Dmitri Mendeleev

Jailah needs a replacement for lithium for a science experiment . She tries silicon , but it does not work . Using what you know about patterns in the periodic table , which advice would you give Jailah ?

• Try a lanthanide series element

• Try a non - metal from the halogen group

• Try an element in the same group as lithium

• Try an element in the same period