Second Quarter Summative Assessment in Science 9
Quiz by Rosalina T. Alonzo
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- Q1
Which atomic model is proposed by Schrodinger?
nuclear model
quantum mechanical model
planetary model
raisin bread model
30sS9MT -IIb -14 - Q2
The symbol “n” in the Bohr theory of atomic structure refers to the
number of electron in an energy level
total energy of the atom
orbit in which an electron is found
energy of electron
30sS9MT -IIb -14 - Q3
Consider the following set of quantum numbers
n= 4 ℓ = 2 mℓ =+1 ms = - ½
The electron which has the given set of quantum numbers occupies sublevel
s
p
f
d
30sS9MT -IIb -14 - Q4
Referring to the same set of quantum numbers in number 3,
n= 4 ℓ = 2 mℓ =+1 ms = - ½
The orbital designation of the electron is
4p
4d
4f
4s
30sS9MT -IIb -14 - Q5
Referring to the same set of quantum numbers,
n= 4 ℓ = 2 mℓ =+1 ms = - ½
How many orbitals does this set of quantum numbers represent?
3
5
1
7
30sS9MT -IIb -14 - Q6
How many electrons are represented by this set of quantum numbers? n = 4 ℓ= 2 mℓ =+1 ms = - ½
5
1
2
10
30sS9MT -IIb -14 - Q7
Element X has this electron configuration: 1s2 2s2 2p6 3s2 3p4; to what group and period does this element belong?
Group 4A Period 3
Group 6B Period 4
Group 6A Period 3
Group 3A Period 4
30sS9MT -IIb -14 - Q8
An element belongs to group 7A and period 4 in the periodic table. Which of the following characteristics best describes this element?
a metal
has 7 valence electrons and 4 main energy levels
has 4 valence electrons and 7 main energy levels
can form -2 ion
30sS9MT -IIb -14 - Q9
Which pair of elements will form ionic bond?
metal to nonmetal
metal to metalloid
metal to metal
nonmetal to nonmetal
30sS9MT -IIb -14 - Q10
Phosphorus belongs to group 5A while chlorine belongs to group 7A. What bond is formed when P and Cl combine?
Ionic
Polar covalent
Nonpolar covalent
Metallic
30sS9MT -IIb -14 - Q11
Which of the following statements will NOT BE TRUE when sodium (atomic number11) atom loses one electron? Sodium atom will
be isoelectronic with Neon
have a -1 oxidation number
have 10 electrons and 11 protons
have a +1 oxidation number
30sS9MT -IIb -14 - Q12
When does covalent bonding take place?
It takes place when atoms attain stability
It takes place when atoms transfer electrons with one another
It takes place when atoms collide with one another
It takes place when atoms share electrons with one another
30sS9MT -IIb -14 - Q13
Which of the following is the correct illustration of ionic bond formation?
30sS9MT -IIb -14 - Q14
Which among the following shows that an atom is stable?
having 2 valence electrons
having 6 valence electrons
having 4 valence electrons
having 8 valence electrons
30sS9MT -IIb -14 - Q15
Which of the following correctly represents the chemical formula formed between Calcium and fluorine?
Ca2F7
CaF
CaF2
Ca2F
30sS9MT -IIb -14
