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7. The atom of an element X has 19 electrons.

(a) Write the electronic configuration for the atom.

(b) If the atom combines chemically with another element Y whose atomic number is 17, what type of chemical bonding would you expect between them?



Answer :

GinnyAnswer

Final answer:

Element X and Y with valency, covalent bonds, and molecule formation.


Explanation:

(a) Element Y, with an atomic number of 17, has 7 valence electrons.

(b) The valency of element Y is 1.

(c) The valency of element X, with 19 electrons, is also 1.

(d) In the molecule formed by X and Y, one covalent bond is expected. X could represent Potassium, and Y could represent Chlorine.


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