A) 0 B) 1 C) 2 D) 3 E) This cannot be predicted. Answer: A Diff: 1 Page Ref: Sec. 8.1 9) The electron configuration of the phosphide ion ([pic]) is __________. A) [pic] B) [pic] C) [pic] D) [pic] E) [pic] Answer: E Diff: 1 Page Ref: Sec. 8.1 10) The halogens, alkali metals, and alkaline earth metals have __________ valence electrons, respectively.
Describe the differences between protons and electrons The difference between protons and electrons is that protons are positively charged and that elections are negatively charged. Another difference is that protons are in the nucleus and electrons circle the nucleus in shells outside the nucleus. What is the difference between the mass number and the relative atomic mass of an element? The difference between the mass number and the atomic mass is that the mass number is the number of protons and neutrons in the nucleus and the relative atomic mass is the mass of an atom. Distinguish between an element and a compound with 2 examples for each An element is a substance that cannot be broken down into any simpler substances.
Column 17 is made up of the more reactive gases- the halogens. The noble gases are in column 18. The electrons are the most significant part of an atom. When atoms don’t have the sufficient number of electrons they need in their outer level, they will do whatever they can to get the number they need. The number of protons an atom has is its atomic number.
Which pairs will react from an ionic compound? Chlorine and oxygen Nitrogen and Lithium b. Which pairs will react from a molecular compound? Flour nine and Argon c. Which pairs will not react to form a compound? Aluminium and potassium 7) A certain particle was found to contain sixteen protons and eighteen electrons.
Discussion: Intermolecular Forces Intermolecular forces (IMF) played a huge part in the lab. Intermolecular forces are forces between molecules that hold molecules to each other. Don’t get them confused with intramolecular forces, which are forces within a molecule that hold atoms together. Intermolecular forces can also be called van der Waals forces. There are three different types of IMF.
September.22nd, 2013 Laboratory #5 Covalent Bonding-Molecular Models 1.A)Which of the electrons in a atom are used when predicting how the atom will bond with another atom? B)How is the periodic table used to determine the number or these electrons? Answer: A)The eletrons that are used when predicting how another atom will bond with another atom involves the outter valance of electrons. B)Atoms must have equal numbers of protons and electrons.The atomic number is the number located in the upper left corner. 2.Which combinations of elements in the periodic table are most likely to form covalent bonds/covalent compounds.
Both types of bonds may also be present in other hydrocarbons. All carbon atoms in alkanes are sp3 hybridized. Also since both C – C and C – H bonds are non – polar, ionic reactions are unusual for alkanes under ordinary conditions. Instead, alkanes typically undergo reactions involving free radicals. An example of a reaction of alkanes is halogenation, which is a free radical substitution reaction involving C – H bonds.
The first possible property of electrons and protons that led to their discovery was their “positive rays,” positively charged streams of atoms generated in gas discharge tubes from J.J. Thomson’s experiment. When these positive rays were bent of deflected in the presence of electric and magnetic fields and then allowed to strike a film, they left curved spots. B. Si-28 Protons- 14 Electrons- 14 Neutrons- 14 Si-29- Protons- 14 Electrons- 14 Neutrons- 15 Si-30 Protons- 14 Electrons- 14 Neutrons- 16 C. This is false, because the atomic mass of chlorine is the average mass of the all isotopes. IV. We sorted the beans into three isotope groups (1,2, and 3) according to the type of bean.
A molecule in which the central atom forms three single bonds and has one lone pair is said to have a ________ shape. A) bent B) linear C) planar D) pyramidal E) tetrahedral 8. A bond where the electrons are shared equally is called a(an) ________ bond. A) polar covalent B) coordinate covalent C) nonpolar covalent D) ionic E) none of the above 9. In a precipitation reaction the insoluble product can be identified by the symbol ________.
Chemistry Design Lab Kim Li Feb 20th,11 Investigating the effect of different concentration of nitric acid on the its drop volume DESIGN Introduction: Intermolecular forces are forces that hold molecules together. They play important roles in determining the properties of a substance, properties such as boiling point, volatility, viscosity, miscibility, and electrical conductivity.  Examples of intermolecular forces include Van der Waals forces, dipole-dipole forces, and hydrogen bonding. Van der Waals forces are temporary dipole all species can form due to uneven distribution of electrons. Dipole-dipole forces are permanent dipoles due to different electronegativity.