WorksheetsPRE UPS 2
Total questions: 20
Worksheet time: 15mins
Which of these statements is TRUE?
Elements in periodic table are arranged in the order of decreasing proton number
Elements in periodic table are arranged in the order of increasing proton number
Elements in periodic table are arranged in the order of increasing group
Elements in periodic table are arranged in the order of increasing period
Elements in the same group is arranged in a ____________ in the periodic table.
horizontal row
vertical column
Potassium and calcium are in the same period because they have the same number of ____________.
proton
valence electron
shell
neutron
State the group, period and block of an element with electronic configuration 1s2 2s2 2p6 3s2 3p6 4s1.
Group = 14; period = 3; block = s
Group = 14; period = 4; block = s
Group = 1; period = 4; block = s
Group = 4; period = 4; block = s
Which of these describe the meaning of isoelectronic species?
Atoms or ions with the same electronic configuration
Atoms or ions with the same proton number
Atoms or ions with the same number of valence electron
Atoms or ions with the same number of valence shell
Moving across a period, the atomic size decreases because the ___________ increases.
shielding effect
effective nuclear charge
oxidation number
ionisation energy
Sodium, Magnesium, Phosphorus and Argon are elements in the same period. Which atom has the largest atomic radius?
Sodium
Argon
Magnesium
Phosphorus
Acidic oxide is formed when oxygen reacts with elements from __________.
group 1
group 5
group 17
group 12
Which of the following compounds is ionic?
NaCl
NO
NH4+
H2O
Element B is located in group 17 in the periodic table. The Lewis dot symbol for element B has __________ dots around element B.
17
7
10
3
"Metal elements lose electrons to attain stable electronic configuration and forming cation, while non-metal elements accept electrons to form anion". This statement referred to the formation of _____________.
covalent bond
dative bond
metallic bond
electrovalent bond
Elements from period 3 onwards may expand their octet because they have ________.
more than 8 valence electrons
less than 8 valence electrons
empty d orbital
more valence shell
The bond angle for trigonal bipyramidal molecules is ___________.
109.5°
120°
90° and 180°
90° and 120°
The molecular geometry of a molecule that has three atoms bonded to a central atom and two lone pairs on the central atom is __________.
trigonal planar
T-shaped
trigonal bipyramidal
tetrahedral
One of the possible overlapping of orbital for the formation of pi bond is:
s and s orbitals overlapping head to head
s and p orbitals overlapping head to head
p and p orbitals overlapping sideways
p and p orbitals overlapping head to head
Which of the following molecules is polar?
CH4
Cl2
CCl4
CH3Cl
The covalent bond in nitrogen molecules is made up of ________.
2 sigma bonds and 2 pi bonds
2 sigma bonds and 1 pi bond
1 sigma bond and 2 pi bonds
1 sigma bond and 1 pi bond
The intermolecular forces that cause the instantaneous dipole in molecules is:
Dipole-dipole forces
London dispersion forces
Hydrogen bond
Covalent bond
A _____________ can be defined as the electrostatic forces between the positively charged metal ions and the sea of delocalised electrons.
metallic bond
ionic bond
covalent bond
dative bond
All of the following elements are in period 3 in the periodic table. Which of the following element has the highest boiling point?
Al
Na
Mg
S
![F4 Chem Chap 6 [TP1-2 LLD] Acids and Bases](https://cf.quizizz.com/image/image-loader.svg)
