Formation of Ions Flashcards
(18 cards)
What is an ion?
An ion is an atom or molecule that has a net charge due to an imbalance between protons and electrons.
What defines an element?
An element is defined by the number of protons it contains.
How many protons does a neutral atom of carbon have?
Six protons.
What is the electron count in a neutral atom of carbon?
Six electrons.
What happens when an atom has more protons than electrons?
It becomes a positively charged ion, known as a cation.
What is the charge of a carbon ion with six protons and five electrons?
+1 charge.
If an atom has five protons and six electrons, what type of ion is it?
It is a negatively charged ion, known as an anion.
What is the charge of a boron ion with five protons and six electrons?
-1 charge.
What is a cation?
A cation is a positively charged ion.
What is an anion?
An anion is a negatively charged ion.
What is the mass number of an atom of platinum mentioned in the example?
195.
How many protons does platinum have?
78 protons.
How many electrons does the platinum ion have in the example?
74 electrons.
What is the charge of the platinum ion with 78 protons and 74 electrons?
+4 charge.
What is the relationship between protons, neutrons, and mass number?
Protons plus neutrons equals the mass number.
If platinum has 78 protons and a mass number of 195, how many neutrons does it have?
117 neutrons.
Fill in the blank: An atom becomes an ion when it has an imbalance between _______ and _______.
protons, electrons.
True or False: A neutral atom has the same number of protons and neutrons.
False.
