trends in the periodic table

Question 1

Nuclear Charge

Answer 1

The more protons that are
in the nucleus, the stronger the attraction
between the nucleus and the outer
electrons.

Question 2

Screening Effect:

Answer 2

Electrons in the inner
shells help to weaken the force of attraction
between the nucleus and the electrons in
the outer shell.

Question 3

Atomic Radius

Answer 3

Half the distance between the
nuclei of two atoms of the same element
joined together by a single covalent bond.

Question 4

Atomic Radius Decreases:

Answer 4

Increasing nuclear charge

No increase in screening effect

Question 5

Atomic Radius
Increases:

Answer 5

New Shell

Screening effect
increases

Question 6

Ionisation Energy

Answer 6

The first ionisation energy of an
element is the energy required to remove
the most loosely bound electron from a
neutral, gaseous state.

Question 7

Ionisation Energy Increases:

Answer 7

Increasing nuclear charge

Decreasing atomic radius

Question 8

Ionisation Energy
Decreases:

Answer 8

Increasing atomic radius

Screening effect
increases

Question 9

more energy is needed in ionisation if

Answer 9

outermost sub-level
is full.

Question 10

Electronegativity

Answer 10

The relative attraction that an
atom in a molecule has for the shared pair of
electrons in a covalent bond.

Question 11

electronegativity incrrease

Answer 11

increase effective nuclear charge
decreasing atomic radius

Question 12

electronegativity decreases

Answer 12

increasing atomic radius
screening effect