The first ionisation energy is the energy required to

remove one electron from the valence shell an atom.

It would be true to say that the electronegativity of the elements

increases across a period and decreases down a group

Core charge is calculated by subtracting

the inner shell electrons from atomic number

Electronegativity is defined as the ability of an atom to

attract electrons towards itself

First ionisation energy

decreases down a group and increases across a period

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Periodic Table trends

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A Chemistry quiz to review understanding of the periodic table trends.

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Questions 15

Answers

1
Down a group the number of shells in an atom
stays the same
decreases
increases
2
The electronic configuration that shows sodium in an excited state is
1s22s22p63p1
.
1s22s22p63s1
3
The first ionisation energy is the energy required to
remove one proton from an atom of an element in a gas phase.
remove one electron from any shell from an atom
remove one electron from the valence shell an atom.
remove one neutron from an ion in a gas phase.
4
The electronic configuration of an atom of element in period 3 and group 2?
2,18,2
2,8,1
2,8,2,1
2,8,2
5
It would be true to say that the electronegativity of the elements
decreases across a period and increases down a group
decreases across a period and down a group
increases across a period and decreases down a group
increases across a period and increases down a group
6
Core charge is calculated by subtracting
the total number electrons from the atomic number
the inner shell electrons from atomic number
the number of valence electrons from atomic number
the inner shell electrons from mass number
7
The electronic configuration of a group 17 element would be:
7
2,8,8,7
2,5
2,8,18,7
8
The subshells in Schrodingers model of electronic configuration are represented by
s,p,d,f
a,b,c,d
s,q,d,f
s,p,x,z
9
Lithium has an atomic number of 3 its electronic configuration is
1s12s2
1s21p1
1s2 2s1
1s22p1
10
Core charge of an atom is the attractive force felt by a valence electron towards the nucleus
True
False
11
A trend as you go down a group is that the
ionisation energy increases down a group
size of atoms increases
electronegativity increases
metallic character decreases
12
Electronegativity is defined as the ability of an atom to
remove an electron
attract electrons towards itself
attract a neutron towards itself
attract protons towards itself
13
From left to right across a period the core charge
decreases
increases
stays the same
14
Potassium is more electronegative than chlorine
False
True
15
First ionisation energy
decreases down a group and decreases across a period
increases down a group and decreases across a period
increases down a group and increases across a period
decreases down a group and increases across a period

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