History of Periodic Tables
When was the atomic number founded?
When is 1913?
Noble gases have ___ valence electrons?
What is 8?
It decreases across the period and increases down the group
What is atomic radius?
The energy required to remove an electron
What is ionization energy?
The atom's ability to attract bonded
What are electrons?
These can be dull or shiny, are brittle and are semi-conductors.
What are metalloids?
The metals in group 2 are called
What are Alkaline Earth Metals?
After losing an electron, the element becomes smaller and positive.
What is a cation?
It increases
What is across a period?
The most reactive nonmetals are the best electron _______
What are the best electron takers?
Mendeleev arranged the Periodic Table by _________
What is increasing atomic mass?
What is the most reactive Alkali metals?
What is Francium?
An anion gains electrons and is _________ charged.
What is negatively?
It decreases
What is down the group?
The most reactive metals are the best electron _______
What are the best electron givers?
Mendeleev accurately predicted the properties of this element?
What is Gallium?
These are the most reactive Metals on the Periodic Table. They have ___ valence electron.
What are alkali metals?
Rank the following in terms of increasing atomic radius: Os, Ni, Fe
What is Ni, Fe, Os?
Rank the following in increasing ionization energy: O, S, Ge
What is Ge, S, O?
Arrange the following in terms of decreasing electronegativity: Co, Fr, Ca
What is Fr, Ca, Co
These are malleable, ductile, good conductors and have luster
What is a metal?
This has 7 valence electrons and is the most reactive nonmetal.
What is Fluorine?
Rank the following in decreasing ionic radius: K+, Ar, S2-, Cl-
What is S2-, Cl-, Ar, K+?
Rank the following in decreasing ionization energy: Te, I, Xe
What is Xe, I, Te?
Rank the following elements in terms of increasing electronegativity: As, Se, Sn
What is Se, As, Sn?