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Sphinxa [80]
3 years ago
6

The electron configurations of two unknown elements X and Y are shown . X: 1s^ 2 2s^ 2 2p^ 6 3s^ 1 Y: 1s^ 2 2s^ 1 Which statemen

t is most likely correct about the two elements ?
Chemistry
2 answers:
PIT_PIT [208]3 years ago
8 0

Answer:

See below.

Explanation:

They both have 1 valency electron so will be metallic and in the same Group (Group 1) of the Periodic Table, so will have similar properties.

lozanna [386]3 years ago
7 0

Answer:

This question is incomplete

Explanation:

  • X has an atomic number of 11 and hence it's sodium (Na) while Y has an atomic number of 3 and hence it is Lithium (Li).
  • The atomic mass of X is 23 while that of Y is 7
  • X has three electron shells while Y has two electron shells
  • X and Y cannot form a compound as there ions are both positively charged (cations). However, there ions both have a charge of +1; hence are univalent positive metals.
  • They are both metals and are found in group 1 of the periodic table
  • The are highly reactive metals because they have just one electron in there outermost shell
  • They react with halogens in group 7 to form salts
  • They dissolve in water to form alkaline

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