WorksheetsPPP and groups vs periods
Total questions: 20
Worksheet time: 11mins
Energy Levels of an atom are also called:
shells
valence electrons
rings
Protons in the nucleus pull on the valence electrons because:
they have equal charges
they have opposite charges
they have no charges
The protons in the nucleus have 'proton pulling power' which we can also call:
shells
effective nuclear charge
nuclear power
On the periodic table, a ROW is called a ____ and a COLUMN is called a ____
Group
Period
Period
Group
Which family is being described:
Stable, Unreactive gases
Which family is being described:
most reactive metals
Alkali
Alkaline-Earth
Halogens
Noble Gases
Which of the following is represented by the highlighted group?
Lanthanide Series
Actinide Series
Halogens
Noble Gases
Which of the following is NOT CORRECT about the number of valence electrons?
Alkali Metals
1ve
Alkaline-Earth metals
2ve
Halogens
17 ve
Noble Gases
8ve
How many valence electrons does carbon have?
4
5
6
7
How many valence (outer) electrons does an Oxygen atom have?
2
6
8
16
Atoms in the same group have similar reactivity ____ because they have the same number of ____
period
shells
group
valence electrons
group
protons
Which of the following will INCREASE the proton pulling power of the nucleus (ENC)?
Higher number of protons
Increased number of shells
Increased number of inner (core) electrons
The more proton pulling power (ENC) from teh nucleus ,then the _____ the atom
larger
smaller
As you move across a period, number of protons ____ and number of shells ____
increases
stays the same
increases
also increases
increases
decreases
As you move down a group, number of protons ____ and number of shells ____
decreases
stays the same
increases
also increases
increases
decreases
Choose 2 things that INCREASE across a period:
atomic number (protons)
PPP/ENC
atom size
number of shells
Choose 3 things that INCREASE down a group
atomic number (protons)
PPP/ENC
atom size
number of shells
Which of the following will determine how many shells (energy levels) an atom contains?
atomic number
group number
period number
Which of the following atoms contains 4 shells (energy levels)?
Zr
Be
K
Which of the following is an alkali metal that has 3 shells (energy levels)?
Na
Mg
Li
