Chemistry
The maximum number of electrons in the 4th energy level
32
What is the element symbol for Flerovium?
Fl
What has a postive charge?
Protons have this charge
radius of an atom is half the
distance between 2 adjacent nucleii
What is losing (stealing) or gaining electrons?
anion
4 states of matter
Aqueous, Solid, liquid, and Gas
What is the element symbol for Calcium?
Ca
Baking ingredients for a cake results in what kind of change?
chemical change
What is the number of protons?
The atomic number tells us this.
the discoverer of neutrons
chadwick
the discoverer of electrons
thompson
the discoverer of protons
rutherford
trend of atomic radius down a group and across a period. and reason why across a period.
increases down a group
decreases across a period
across a period because of increase in nuclear charge. also shielding stays generally the same.
they are Group 18 elements on the right hand side of the periodic table of elements. what is the QUESTION???
What are the Noble Gases?
daltons 2 laws that still are true today.
atoms are very small
matter is neither created nor destroyed
the effect on electrons in anions and impact on radius
repel each other and expands radius of anion
how you find relative atomic mass of a substance with mass spectrometry data - 2 factors you need to multiply together.
% abundance
atomic mass of isotope
Copper has what valenece electronic configuration
as an atom and as an ion
4s13d5 - atom
3d4 - ion
Covalent bonding happens generally between these type of elements. and what happens to their electrons
non-metals and sharing
when there are more protons than electrons present, what type of ion do we have and explain what happens to the radius
cation
extra protons cause more attraction for outer electrons to contract / reduce the radius of ion. also it loses an electron shell