The number of valence electrons of an element can be determined by the periodic table group (vertical column) in which the element is categorized
Norway
england
iceland
sweden
Estonia
latvia
ireland
france
switzerland
portugal
poland
germany
hungry
romana
Ukraine
belarus
austria
vatican city
belgiuiv
crotia
jersey
guernsey
isle of man
denmark
faroe island
san marinc
monace
united kingdom
greece
Answer:
if a solid appears when mixing two liquids
Explanation:
i remember this question :D
