Trends in the Periodic Table Properties Shielding Trends Atomic Radius Ionic Radius Ionization Energy Electronegativity
Properties Elements in the same column (group) have similar properties but not identical properties. _________ Reactivity of metals increases down and to the left ______________ Noble gasses are …..........
TeachWithFergy Preview File Please enjoy this preview of your Student Version of the Power Point. Some slides appear blank because they have been removed. Student versions have portions of the text removed which is given in the teacher version and appear as ______ Other slides may have ........... on them, this represents writing that has been removed. Please note that the Entire Unit Package can also be purchased at a steep discount from my Store.
The Periodic Table
The Periodic Table
Alkali Metals – Group 1 Atoms of the alkali metals have a single electron in their outermost level ___________ They react violently with water and so are never found free in nature.
This slide has been removed
Transition Metals – Group 3-12 They are good conductors of heat and electricity Form coloured ions Have varied valences Show catalytic activity Iron Metal Gold
Metalloids Have properties of both metals and non-metals B – Boron Si – Silicon …........ As – Arsenic Te – Tellurium Po – Polonium
Halogens – Group 17 Noble Gases – Group 18 They are very reactive and are therefore never found free in nature. They occur as diatomics Have 7 valence electrons Chlorine Gas Noble Gases – Group 18 They have a full outer energy level and are not reactive Neon signs are created using a combination of nobel gases which gives them their different colours
This slide has been removed
This slide has been removed
Trends There are 4 trends in the Periodic Table: Atomic Radius Ionic Radius Ionization Energy __________
Atomic Radius (AR) Is half the distance between the nuclei of 2 atoms of the same element Across a Period: AR decreases as …............ Down a Group: AR increases as the ____________
Atomic Radius
This slide has been removed
Ionic Radius ANIONS (-’ve ions) Are larger than the neutral state because: The +'ve charge per # of electrons has decreased ____________
Ionization Energy Is the amount of ___________________________ from an atom or ion in the gaseous state A "gaseous atom" means an atom that is all by itself (not bonded to others in a solid or a liquid state) 1st Ionization energy: the amount of energy required to _____________ 2nd Ionization energy: the …...............
Ionization Energy Increases: From left to right as the number of protons increases which makes it more difficult to rip an electron away due to the ___________ As you move up a column since the valence e- _____________
This slide has been removed
Check Your Understanding Is the 2nd ionization energy going to be greater than, less than, or equal to the 1st ionization energy? Answer: _____________ ____________ ______
Electronegativity ____________ Assigned values of 0 to 4.0. Fluorine is the most electronegative atom with an electronegativity of 4.0. Fluorine has the highest attraction for electrons of an atom on the periodic table The trend …..........
This slide has been removed