... detach the loosest electron from atoms of that element.
(e) All alkali metals have similar chemical properties.
(f) Alkali earths have one electron in the outer shell.
(g) Electronegativity is the amount of negative charge on an atom.
(h) Ca has a valency of 2.
(i) True ionic bonds are unknown and a ...
GCSE Chemistry coursework: Research Study on `Francium and the
... This is an example of the Bohr atomic structure model of a lithium atom. 
The Bohr model can explain the reactivity of the alkali metals because it says that atoms are at
their most stable when they have a stable octet and seeing as the alkali metals only need to lose one
electron to gain a stab ...
Chemical Basis of Life
... both hydrogen and oxygen are gases at room temperature
2 - Some compounds are quite simple others are very complex, the
important thing to remember is that a compound is always in a fixed
CHEMISTRY TERMS Period: Elements in the same horizontal row
... Period: Elements in the same horizontal row with the same ground
state energy level.
Periodic Law: Elements list in order of their atomic numbers that fall
into reoccurring groups.
Ionic Radius: the radius of an atom’s ion, measured by the distance
between ions in a crystal lattice.
Atomic Radius: o ...
Chapter 14 Review
... 6. Which part of the atom dictates its chemical properties?
CHE 1401 - Fall 2013 - Chapter 7 Homework 7 (Chapter 7: Periodic
... 1. It is not really a member of any particular group.
2. Its electron is not at all shielded from its nucleus.
3. It is the lightest element.
4. It is the only element to exist at room temperature as a diatomic gas.
5. It exhibits some chemical properties similar to those of groups 1A and 7A.
A) 1, ...
Ch. 4: Atoms and the Periodic Table – Study Guide
... to form a lithium ion with a charge of 1+. A lithium ion is much less reactive than a lithium atom because it has a full
outermost energy level.
Isotopes of an element have the same atomic number but different atomic mass.
Group 1 of the periodic table consists of the alkali metals, a highly reactiv ...
... •Electron cloud is 10,000 times larger than the
nucleus, but is still mostly empty.
•Electrons are in the cloud but can not be
pinpointed at an exact time because they move
... After reading these sections complete two of the following three options:
1. Explain what a valence electron is, and why it might make sense for valence
electrons to be the “bonding/reactive” electrons. Then give an example of an
element that would be likely to bond and one that would not be likely ...
Atomic Crossword Name: Period: ____
... 11. A _____________ electron is in the outermost shell of an atom
12. Formed when atoms share electrons
14. Has a different number of neutrons than normal
15. The splitting of an atomic nucleus (usually with heavy elements)
17. British scientist who formulated our modern atomic theory
22. The mergin ...
– Units 5-7 Review Honors Chemistry Unit 5
... How many protons, neutrons, and electrons are in Nickel-58?
The element copper is found to contain the naturally occurring isotopes
29Cu63 and 29Cu65. The relative abundances are 69.1% and 30.9%
respectively. Calculate the average atomic mass of copper.
Ninety-two percent of the atoms of an element ...
Chapter 6 Review“The Periodic Table”
... 1. How is the number of neutrons in the nucleus of an atom calculated?
2. All atoms are neutral, with the number of protons equaling the ___.
3. Isotopes of the same element have different _____.
4. Using the periodic table, determine the number of neutrons in 16O.
5. What does the number 84 represe ...
... I have some understanding but I need to revise this some more
I don’t know this or I need help because I don’t understand it
Ununennium, also known as eka-francium or simply element 119, is the hypothetical chemical element with atomic number 119 and symbol Uue. Ununennium and Uue are the temporary systematic IUPAC name and symbol, until a permanent name is decided upon. In the periodic table of the elements, it is expected to be an s-block element, an alkali metal, and the first element in the eighth period.Ununennium is the element with the lowest atomic number that has not yet been synthesized. To date, all attempts to synthesize this element have been unsuccessful. Its position as the seventh alkali metal suggests that it would have similar properties to the alkali metals, lithium, sodium, potassium, rubidium, caesium, and francium; however, relativistic effects may cause some of its properties to differ from those expected from a straight application of periodic trends. For example, ununennium is expected to be less reactive than caesium and francium and be closer in behavior to potassium or rubidium, and while it should show the characteristic +1 oxidation state of the alkali metals, it is also predicted to show the +3 oxidation state unknown in any other alkali metal.