Question

Each of the following letters represents an unknown main group element. Your task is to use the clues provided to place them in their correct order on. The unknown elements are clustered by group, but they are not in order:

FYQ          ZBI          PVEJ          ANU          WDM          COGT          HLS          RXK

Clues:

C has the least number of protons in its group

The atomic number of O is 3 times that of M

B is the most electronegative element on the periodic table

G is a noble gas

H is the only metalloid in its group

Y has an atomic number of 14

J is a colorless gas

WK is the simple formula of an oxide

E is an alkali metal

D has the smallest atomic radius of its group

A has 5 valence electrons

The atomic mass of S is more than double that of L

The electrons of R are distributed over 3 major energy levels

The atomic mass of T is one half that of G

I is a liquid at room temperature

Z is a halogen

N has the largest atomic radius of the group

A neutral atom of U has 7 electrons

Q is the only nonmetal in its group

Atoms of V are smaller than P

W and E are in the same period

Answer 1

B is the most electronegative element on the periodic table: Fluorine

Y has an atomic number of 14: Silicon

I is a liquid at room temperature: Bromine

Z is a halogen: Chlorine

Q is the only nonmetal in its group: Carbon

F will be an element appearing later than carbon and silicon in their group

J is a colorless gas: Hydrogen

V will appear before P as size of V is less than P

Since E is an alkali metal (ie, lithium, sodium, potassium, rubidium, caesium, and francium) the order can be JEVP or JVPE (any one of the two, but here mentioning any one of them below)

A neutral atom of U has 7 electrons: Nitrogen

A has 5 valence electrons: Phosphorus (elements later on in the group will have a d-orbital in the valence shell thus more electrons in valence shell)

N has the largest atomic radius of the group: Bismuth

WK is the simple formula of an oxide, thus W belongs to group 2

D has the smallest atomic radius of its group: Beryllium

G is a noble gas: C has the least number of protons in its group: C is Helium

The atomic mass of T is one half that of G: T is neon and G is argon

The atomic number of O is 3 times that of M: O is Krypton and M is Magnesium

W should be an element after Be and Mg

H is the only metalloid in its group: Boron

The atomic mass of S is more than double that of L: Thus L should appear before S

WK is the simple formula of an oxide: K is Oxygen

The electrons of R are distributed over 3 major energy levels: Sulfur

Correct order: QYF BZI JEVP UAN DMW CTGO HLS KRX