which family of elements is the most stable on the periodic table
Noble gases
How many valence electrons are in the outermost shell of a sodium atom?
1
2
7
5
Which family on the periodic table is family 17?
Halogens
which family of elements are the most reactive on the periodic table
Alkaline metals
how many electrons are in the outermost shell of a fluorine ion?
8
7
1
6
what compound is formed when sodium donates an electron to chlorine
Salt or sodium chloride or NaCl
what does the 2+ refer to?
Family number
Ion charge
Atomic number
Average atomic mass
how many shells are there in the bore model of an aluminum atom?
2
1
4
3
What do a beryllium ion and a neon atom have in common?
They have the same number of electron shells
None of the above
They have full outer shells
They have the same number of electrons
what is the name of a horizontal row in the periodic table?
Period
Family
Group
Column
to which of the following groups does oxygen belong
Gas
Nonmetal
Metal
Metalloid
which of the following is the same as the atomic number of an element
Number of electron
Number of protons
Number of ion charges
Number of neutrons
which of the following represents the board model electron arrangement of a chlorine atom?
2,8,8
2,8,7
2,2,13
2,15
What is the maximum number of electrons that the first electron shell can hold?
4
18
2
8
what country was element 115 discovered?
Russia
How many electrons are in the outermost shell of sulfur
6
1
8
2
true or false, lithium is more reactive than rubidium
False
The elements that have properties of both metals and nonmetals are called…
Metalloids
what does a 30 referred to?
Ion charge
Atomic number
Atomic mass
Family number