Table:
0
A
B
C
D
E
1
Lithium
Sodium
Potassium
Rubidium
Caesium
2
Lithium
Sodium
Potassium
Rubidium
Caesium
3
H a l o g e n s
Fluorine
LiF (3.0)
NaF (3.1)
KF (3.2)
4
H a l o g e n s
Chlorine
LiCl (2.0)
NaCl (2.1)
KCl (2.2)
5
H a l o g e n s
Bromine
LiBr (1.8)
NaBr (1.9)
KBr (2.0)
6
H a l o g e n s
Iodine
LiI (1.5)
NaI (1.6)
KI (1.7)

Questions and formulas:
Question: what is the type of lithium when rubidium is nabr (1.9)?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="nabr (1.9)"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,D2:D6="nabr (1.9)"),1))
Level: medium
Question: what is the properties of sodium when rubidium is nacl (2.1)?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="nacl (2.1)"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,D2:D6="nacl (2.1)"),2))
Level: medium
Question: what is the properties of potassium when lithium is h a l o g e n s and sodium is bromine?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(A1="h a l o g e n s")*(B1="bromine")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,(A2:A6="h a l o g e n s")*(B2:B6="bromine")),3))
Level: medium
Question: what is the properties of lithium when caesium is ki (1.7)?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="ki (1.7)"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,E2:E6="ki (1.7)"),1))
Level: medium
Question: what is the properties of sodium when lithium is h a l o g e n s and rubidium is nacl (2.1)?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(A1="h a l o g e n s")*(D1="nacl (2.1)")),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,(A2:A6="h a l o g e n s")*(D2:D6="nacl (2.1)")),2))
Level: medium
Question: what is the properties of sodium when potassium is lii (1.5)?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="lii (1.5)"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,C2:C6="lii (1.5)"),2))
Level: medium