Semmelweis entrance exam (N) Questions With Complete Solutions
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Course
Microbiology Semmelweis
Institution
Microbiology Semmelweis
Semmelweis entrance exam (N) Questions
With Complete Solutions
What are the periodic properties?
Element (on periodic table)
Atomic number is the same as number of protons
Atomic mass is the same as Number of protons and neutrons
Different types of chemical bonding metallic, covalent, ioni...
What is metallic bonding? the chemical bonding that results from the attraction between
metal atoms and the surrounding sea of electrons
What is hydrogen bonding? Hydrogen bonding is the strongest intermolecular force. it
only happens when hydrogen is covalently bonded to fluorine, nitrogen or oxygen because
they're very electronegative and can pull the bonding electrons away from the hydrogen.
Substances with hydrogen bonding have higher melting and boiling points because of the extra
energy needed to break the hydrogen bonds.
What is a dipole-dipole force? The attraction between the positive end of one polar
molecule and the negative end of another
, Semmelweis entrance exam (N) Questions
With Complete Solutions
What is a london dispersion force? weak forces that result from temporary shifts in the
density of electrons in electron clouds
What is the lewis structure? diagrams that show the bonding between atoms of a molecule
and the lone pairs of electrons that may exist in the molecule.
Geometry of molecules The number of atomic orbitals used to create a set of hybrid
orbitals equals the number of orbitals generated by hybridization.
Lewis structure of Ozone bent
Lewis structure of CO2 linear
Lewis structure of H2O bent
Lewis structure of Methane tetrahedral structure
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