Use the periodic table and the listed features of element X, which are given at STP, to answer the question.
Information
Features of element X and a portion of the periodic table.Short description, Features of element X and a portion of the periodic table.,Long description,
Element X has these features:
Exists as a gas.
Nonreactive.
Does not conduct electricity.
Even atomic number.
Does not lose or gain electrons.
Full outer valence electron shell.
A portion of the periodic table is shown. These families are included:
Family 1, alkali metals. All elements in this family have odd atomic numbers. The element symbols, from top to bottom, are: Upper L i, Upper N a, Upper K, Upper R b, Upper C s, Upper F r.
Family 2, alkaline earth metals. All elements in this family had even atomic numbers. The element symbols, from top to bottom, are: Upper B e, Upper M g, Upper C a, Upper S r, Upper B a, Upper R a.
Family 17, halogens. All elements in this family had odd atomic numbers. The element symbols, from top to bottom, are: Upper F, Upper C l, Upper B r, Upper I, Upper A t, Upper U u s.
Family 18, noble gases. All elements in this family had even atomic numbers. The element symbols, from top to bottom, are: Upper H e, Upper N e, Upper A r, Upper K r, Upper X e, Upper R n, Upper U u o.
Question
Element X belongs to one of these families: alkali metals (family 1), alkaline earth metals (family 2), halogens (family 17), or noble gases (family 18).
To which family does element X belong?
Answer options with 4 options
A.
alkali metals (family 1), because elements in this family are good conductors of electricity
C.
halogens (family 17), because elements in this family exist as gases
B.
alkaline earth metals (family 2), because elements in this family have even atomic numbers
D.
noble gases (family 18), because elements in this family have full outer valence electron shells