Font size
WorksheetsOCR A Chemistry – 'Electron Structure' 2.2.1
Total questions: 20
Worksheet time: 22mins
How many electrons can fill the first FOUR shells of an atom?
1st Shell = (a)
2nd Shell = (b)
3rd Shell = (c)
4th Shell = (d)
name the subshells in order that they are filled
1st to be filled = (a)
2nd to be filled = (b)
3rd to be filled = (c)
4th to be filled = (d)
How many electrons does each sub-shell hold?
s = (a)
p = (b)
d = (c)
f = (d)
Elements are arranged into "blocks" on the periodic table.
Which block is two groups wide?
(a)
Elements are arranged into "blocks" on the periodic table.
Which block is 4 periods high?
(a)
How many orbitals does each hold
s = (a)
p = (b)
d = (c)
f = (d)
Which is the best definition of an ATOMIC ORBITAL
a region around the nucleus that can hold two electrons, with opposite spins
a region around the nucleus that can hold up to two electrons, with opposite spins
an energy level in an atom that can hold up to two electrons, with opposite spins
a nuclear region that can hold up to two electrons, with opposite spins
TICK ALL ACCEPTABLE drawings of a p-orbital
Write the symbol for the sub-shell that is filled next:
1s,2s,2p,3s,3p,4s,3d,...
(a)
Write the symbol for the sub-shell that is filled next:
1s,2s,2p,3s,3p,...
(a)
Which atom has a correct electron configuration?
TICK ALL CORRECT STATEMENTS
the d-subshell can hold up to 10 electrons.
the p-subshell holds up to 3 electrons
the d-subshell is made of 5 d-orbitals
Which electron configuration matches
NITROGEN (group 5)
Which pair of elements are exceptions to the general rules for filling of electrons in orbitals
Cu and Zn
Sr and Zn
Cr and Mn
Cr and Cu
Which block can this atom be found in?
1s22s22p63s23p5
(a)
Write the symbol for the element:
1s22s22p63s23p64s13d5
(a)
Write the symbol for the element with a 1+ ion:
1s22s22p63s23p63d10
(a)
Which order are the following subshells filled in?
1s
2s
2p
3s
3p
Which order are the following subshells filled in?
2p
3s
3p
4s
3f
Write the symbol for the sub-shell that is emptied first:
1s,2s,2p,3s,3p,4s,3d
(a)
