Chemistry
The maximum number of electrons in the first energy shell
What is 2?
What is the element symbol for Nitrogen?
Protons have this charge
What is a postive charge?
What subatomic particles make up the mass of an atom?
Protons and neutrons
Elements that are the most abundant on the periodic table.
What is a Metal?
The number you use to find the number of electrons in a neutral atom.
atomic number
An element with a charge is called....
An ion
What is the element symbol for Calcium?
Ca
What is the charge on an element with 19 protons and 18 electrons?
Charge is +1
How many moles in 23 grams of nitrogen (N2)?
0.82 moles N2
The atomic number tells us this.
What is the number of protons?
The maxiumum number of electrons in the 2nd energy shell
What is 8?
Write the chemical name for H2O
dihydrogen monoxide
How many valance electrons does Phosphorous have?
5 Valance Electrons
the atomic number of selenium
34
Group 18 elements on the right hand side of the periodic table of elements.
What are the Noble Gases?
How many orbital and how many electrons are in subshell p ?
3 orbitals and 6 electrons
The melting point of covalent bonds is ?
Low
Alkali metals belongs to this group
Group 1
Name all 3 subatomic particles.
What are Protons, Neutrons, and Electrons
What does it mean if an atom has a high ionization energy?
It does not give up electrons easily.
Write the electron configuration for Titanium.
1s22s22p63s23p64s23d2
Covalent bonding happens generally between these type of elements.
non-metals
Group or family 17 elements are these.
What are Halogens?
The sum of protons and neutrons in the nucleus of an atom is known as the _________
What is the mass number?
A covalent bond is formed by
What is the sharing of electrons?
atoms of SAME PROTONS DIFFERENT NEUTRONS
isotopes
Neutrons have this kind of charge
What is a neutral charge?
What element has the electron configuration of :
1s22s22p63s23p2
Silicon (Si)
Lithium, sodium, potassium, rubidium, caesium and francium belong to the family of ______________
Alkali metals.