Atoms/Elements
Name the scientist who organized the elements in a periodic table.
Mendeleev
The maxiumum number of electrons in the 2nd energy shell
8
Elements that are the most abundant on the periodic table.
Metals
Ions are made in what way?
Losing (stealing) or gaining electrons
Name all 3 subatomic particles.
Protons, Neutrons, and Electrons
Electrons have this kind of charge
How many valence electrons does an atom need to be stable?
8
How do electrons behave in a metallic bond?
They become delocalised
The maximum number of electrons in the first energy shell
2
Valence electrons are located in this shell
The outermost (last) shell of an atom.
Alkali metals belong to this group
Group 1
Name of the result of two different elements that have bonded.
Compound
Element symbol for Potassium
K
True or False: Nonmetals are really poor conductors of electricity.
True
Does atomic radius increase down a group from top to bottom?
Yes
Water is made of Hydrogen and oxygen, what type of bond do they form?
Covalent bond
The number you use to find the number of protons in the nucleus.
Atomic number
Family of elements in Group 17
Halogens
How does electronegativy change across a period in the periodic table?
Electronegativity increases from left to right.
Covalent bonding happens generally between these type of elements.
Nonmetals