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- Q1
The spin quantum number of an electron can be thought of as describing _______
the number of revolutions the electron makes about the nucleus per second
whether the electron's charge is positive or negative.
the direction of electron spin.
the electron's exact location in orbit.
30sS9ES -IIIb-28 - Q2
How many electrons from the outermost shell does a 4s orbital possess?
4
5
3
2
30s - Q3
Which set of quantum numbers uniquely defines one of the electrons in an atomic orbital with n = 2 and l = 0?
n = 2, l = 0, ml = 0, ms = +1
n = 2, l = 0, ml = 1, ms = +½
n = 2, l = 0, ml = 0, ms = +½
n = 2, l = 0, ml = 1, ms = +1
30s - Q4
What is the electron configuration for nitrogen, atomic number 7?
1s 22s2 2p3
1s2 2s2 2p1
1s2 2s3 2p2
1s2 2s2 2p2 3s1
30s - Q5
Which of these d-orbitals contains both paired and unpaired electrons?
30s - Q6
How many valence electrons does Boron have?
Four
Two
Three
One
30s - Q7
Covalent and ionic bonding produce certain types of compounds that have different properties. What is the general term used for all the compounds with covalent bond?
Atom
Molecule
Compound
None of These
30s - Q8
Non-polar covalent bonding involves the equal sharing of electrons between atoms to attain stability. Which of the following compounds will have non-polar covalent bonding?
CH4
HCl
O2
NaCl
30s - Q9
Electrical and thermal conductivity is one of the properties of compounds. Which of the following types of bonds will have a high electrical conductivity?
ionic bond
covalent bond
polar covalent bond
non-polar covalent bond
30s - Q10
The following compounds are commonly found in nature or in our household. Which do you think will have the highest melting/boiling point if we are to subject those substances to heating?
none of the choices
transferred to non-metal
sodium chloride (NaCl)
shared to a non-metal
30s - Q11
What happens to the electron of a metal element in ionic bonding forming a compound?
transferred to non-metal
shared to a non-metal
shared unequally with non-metal
none of the choices
30s - Q12
Which best describes the position of the elements in the Periodic Table and its valence electrons?
Noble Gases elements have seven valence electrons
All metalloids have the same valence electrons
Elements on the same period have the same valence electrons
Elements on the same family have the same valence electrons
30s - Q13
Which best describes an anion?
It has more electrons than protons.
It has a neutral charge.
It has more neutrons than protons.
It has more protons than electrons.
30s - Q14
How many electrons does Fluorine ion need for it to be stable?
1
2
3
4
30s - Q15
What ion can be combined with oxygen ions to form an ionic compound?
Calcium ion
Chlorine ion
Fluorine ion
Carbon ion
30s
