PEN
Find PEN for Calcium
What is 20, 20, 20
Definition of an ion
What is an atom with a different number of electrons
Definition of an isotope
What is an atom with a different mass (or different number of neutrons)
What is 7
This subatomic particle has a charge of positive 1
What is a proton
Atomic number ad mass number for magnesium
What are 12 and 24
When an atom gains electrons it becomes a _________and has this charge
What is anion and negative
One atom has 20 protons and a mass of 44. Another atom has 20 protons and a mass number of 40. Identity of these atoms and reason for the difference in mass numbers?
What is calcium and they are isotopes
The number of electrons and spaces allowed on the 3rd energy level
What is 8 and 4
This subatomic particle has neutral charge
What is the neutron?
What is 92, 92 and 142
When an atom loses electrons it forms a ________and has this charge
What is cation and positive
Copper has two isotopes. Copper-63, which has an atomic mass of 62.93 and copper-65, which has an atomic mass of 64.93 u. In any sample of copper atoms, 69.1% will be copper-63 and 30.9% will be copper-65. Will the average atomic mass of copper be closer to 63 or 65?
What is 63 because the percent is higher
The number of electrons and spaces allowed on the 6th energy level
What is 32 and 16
This subatomic particle has a negative charge
What is the electron
Find PEN for Co+3
What is 27, 24 and 33
The two possible ions that silicon can form
What is +4 and -4
Chlorine has two isotopes. Chlorine-35 has an actual mass of 34.9689 and chlorine-37 has a mass of 36.9659. In any sample of chlorine atoms, 75.771% will be chlorine-35 and 24.229% will be chlorine 37. Calculate the average atomic mass of chlorine to three decimal places
What is 35.452
The number of valence electrons that Ge has
What is 4
Protons and neutrons are located in the _________and electrons are located ___________-
What is the nucleus and in the area around the nucleus
PEN for an element that is named after a continent
What is 63, 63 and 89
The kind of ion that krypton forms and why
What is that it doesn't because it has 8 electrons in it's outer level and is a noble gas
One atom has 19 protons and a mass of 44. Another atom has 21 protons and a mass number of 40. Identity of these atoms and reason for the difference in mass numbers?
What is potassium and scandium, they have different masses because they are different elements
The number of valence electrons that Xe has
What is 8
The subatomic particle that can never change is the _______and the subatomic particle that changes when you form an isotope is the ___________and the subatomic particle that changes when you form an ion is the ___________
What is the proton, neutron and electron