Atomic Structure
Positively charged particles in the nucleus.
What are protons?
This shell can hold a maximum of 2 electrons.
What is the first shell?
This ion is formed when a chlorine atom gains one electron.
What is Cl⁻?
This determines the period of an element.
What is the number of electron shells?
This type of bonding involves the transfer of electrons.
What is ionic bonding?
This is the valency of oxygen.
What is 2?
Subatomic particles with almost no mass.
What are electrons?
This is the electron configuration of oxygen.
What is 2:6?
This type of ion is formed when a metal lose electrons.
What is a cation?
This determines the group of an element.
What is the number of valence (outer shell) electrons?
These are charged particles formed when atoms gain or lose electrons.
What are ions?
This is the formula of a compound formed from magnesium ions (Mg²⁺) and chlorine ions (Cl⁻).
What is Magnesium Chloride?
To find the number of neutrons, you subtract the atomic number from this.
What is the mass number?
This term is given to electrons found in the outermost shell of an atom.
What are valence electrons?
This happens to magnesium when it forms an ion.
What is losing 2 electrons?
This group contains the non-reactive noble gases.
What is Group 18?
This is the force that holds oppositely charged ions together.
What is electrostatic attraction?
This is the number of aluminum and oxygen atoms needed to bond to form Al₂O₃.
What is 2 and 3?
This is the only subatomic particle whose number can change without changing the identity of an element.
What is an electron?
This element has the electron configuration 2:8:7.
What is chlorine?
This is the charge on an ion with 15 protons and 18 electrons.
What is 3−?
This is the name given to Group 17 elements such as fluorine and chlorine.
What are halogens?
This is the structure formed by a regular arrangement of ions.
What is a giant ionic lattice?
This is the charge of the ions that form when sodium reacts with sulphur in sodium sulphide.
What is 1+ and 2-?
This quantity stays the same when an atom becomes an ion.
What is the number of protons?
This element is found in Period 3 and Group 2 based on its electron arrangement.
What is magnesium?
This is the symbol of an ion formed when an element in Period 3 loses 3 electrons.
What is Al³⁺?
This is the period and group of an element with electron arrangement 2,8,7.
What is Period 3, Group 7?
This is why ionic compounds only conduct electricity when molten or dissolved
What is ions being free to move and carry charge?
This is the formula of a compound formed from calcium ions and nitrogen ions.
What is Ca₃N₂?