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Periodicity - Higher Chemistry Flashcards | StudBud
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Periodicity - Higher Chemistry
Periodicity - Higher Chemistry
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Trends in The Periodic table
Flashcards
20 cards
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Questions
20
Answers
1
What is the trend in electronegativity going down a group
Stays the same
Increasing
Decreasing
2
Fullerence (C
60
) is
ionic
covalent network
covalent molecular
3
Electronegativity is described as
attractive strength of an atom for a shared pair of e-
a measure of the size of an ion
a measure of an atoms ionisation energy
the charge on an ion
4
Periodicity is the occurrence of what in the Periodic table?
group
rows
patterns
5
If there is no difference in electronegativity values between atoms the bonding is said to be..
pure covalent
polar covalent
non-polar covalent
covalent
6
In The Periodic table, going across a period the covalent radius decreases due to the .....
decreased positive charge on the nucleus
increased positive charge on the nucleus
increase in the number of energy levels
7
The covalent bond which holds atoms together is very strong. It is.....
intermolecular
a covalent bond
intramolecular
8
Bonding is the _________ which holds atoms or particles together
way
force
mechanism
9
Which type of bonding holds aluminium atoms together in a sample of the element?
Ionic
Metallic
Covalent molecular
Covalent network
10
Which of the following elements
does not
have a covalent network structure
B
Si
Ga
C
11
The covalent radius of an elements is described as....
half the distance between the electrons of two bonded atoms
half the distance between the nuclei of two bonded atoms
half the distance between the electrons and the nucleus
12
The bonding in the element fluorine is...
polar covalent
covalent network
ionic
non-polar covalent
13
the first ionisation energy of bromine is...
Br+(g) → Br 2+(g) + 2e-
Br(g) → Br +(g) + e-
Br(g) → Br 2+(g) + 2e-
Br2(g) → Br +(g) + e-
14
London Dispersion forces are a type of van der Waals force caused by........ around the nucleus
uneven distribution of charge
even distribution of electrons
uneven distribution of constantly moving electrons
15
Which of the following is
not
a property of all covalent networks?
strong, rigid structures
conducts electricity
high melting and boiling points
16
Going down a group in The Periodic table the size of the atom...
increases
decreases
does not change
17
Why is there such a large increase between the second and third ionisation energies of calcium?
There is a shielding effect
Calcium atoms have a large nuclear charge
The third electron must be removed from a full energy level
18
Which of the following elements has a monatomic structure
argon
hydrogen
chlorine
sulfur
19
Shielding increases with....
does not change anything
increases with an increasing number of inner electrons
a decreasing number of energy levels
20
Which of the following describes a property of an atom with a high electronegativity?
no attraction for the electrons in a covalent bond
a weak attraction for the electrons in a covalent bond
a strong attraction for the electrons in a covalent bond
