atomic structure Flashcards
(25 cards)
What subatomic particles are in the nucleus in an atom?
Protons and neutrons
What subatomic particle goes around the nucleus in an atom?
Electrons
What is the charge on a proton?
+1
What is the charge on a neutron?
0
What is the charge on an electron?
-1
Do atoms have a charge, why?
No because the number of positive protons equal the number of negative electrons
A carbon atom has 6 protons how many electrons will it have?
6
What order are the elements in the modern periodic table?
Atomic number
How do you calculate the number of protons in an element?
Atomic number
Do you always get the same number of protons in an element?
Yes
How many protons has Lithium?
3
How many electrons has Lithium?
3
How do you calculate the number of neutrons
Mass number - atomic number
How many electrons can occupy the first (inner) shell?
2
How many electrons can occupy the second shell?
8
How many outer electrons have the elements in group 1?
1 outer electron.
How many outer electrons have the elements in group 6?
6 outer electrons.
What is a compound?
A substance made of two or more different elements chemically bonded together.
Which electrons are involved in chemical bonding?
outermost electrons
What happens to electrons when they are involved in bonding?
They are either shared (covalent bonding) or transferred (ionic bonding) between atoms.
What is the relative mass of a proton?
1
What is the relative mass of a neutron?
1
What is the relative mass of an electron?
0.0005
What is the mass number?
The total number of protons and neutrons in the nucleus of an atom.
