Chemistry 1
How are ions formed?
By losing or gaining valence electrons
This is the shorthand term for a negatively charged ion.
What is an anion?
State the FULL orbital electron configuration of Ca
1s2 2s2 2p6 3s2 3p6 4s2
This element is the most electronegative on the periodic table.
What is Fluorine?
The sum of protons and neutrons in the nucleus of an atom is known as the _________
Mass number
What value do you use to find the number of neutrons in an element?
What is the mass number?
Name an element in Group 4.
Refer to PD.
What is the 25th element called?
Manganese or Mn
What is the atomic number of silver?
47
The periodic table comprises mostly of, metals, or non-metals?
metals
How many periods are shown on the periodic table?
7
What element has the symbol Hg?
Mercury
A chemical bond between two nonmetals is called a(n)
covalent bond.
A positive ion is known as a(n)?
Cation
What is a valence electron?
Electron in the outermost energy level
This value represents the average distance from the center of a nucleus to the outermost ring of the valence shell
What is the atomic radius?
Which is the correct formula for the compound formed between potassium and nitrogen?
K3N
What is in the nucleus in the atom?
protons and neutrons
Elements with the same number of protons but different number of neutrons
Isotope
Will oxygen accept or donate electrons? How many?
Accept two electrons
What are the elements in Group 18 called ?
Noble Gases
How many valance electrons in calcium?
2
How many valance electrons in Na?
1
What is the mass number made of?
neutrons and protons
Name all 3 subatomic particles.
Protons Neutrons Electrons
Name three ways to accelerate a chemical reaction.
How many electrons are present in Cl-?
18 electrons; adds 1 electron
Show a lewis dot diagram of Sulfur?
How many atoms in (NH4)3PO4
18
Fluorine, chlorine, bromine, and iodine belong to the family of ______________
halogens
Ionic bond
Elements in Group 5A form ions with a charge of ___
3-
What group of elements satisfies the octet rule without forming compounds (do not react)?
Noble gas
CO2 is this type of bond
Covalent bond.
How many atoms in Al2(SO3)3?
12