Respuesta :
Answer:
For a: The element forming covalent compound with fluorine is Hydrogen.
For b: The electronic configuration of the element X is [tex][Uuo]8s^2[/tex]
Explanation:
Electronic configuration is defined as the representation of electrons around the nucleus of an atom.
Number of electrons in an atom is determined by the atomic number of that atom.
To write the electronic configuration of the elements in the noble gas notation, we first count the total number of electrons and then write the noble gas which lies before the same element.
For the given options:
- For a:
Covalent compound is defined as the compound which is formed by the sharing of electrons between the atoms forming a compound. These are usually formed when two non-metals react.
Hydrogen is the 1st element of the periodic table and is considered as a non-metal. It has 1 unpaired electron.
Its electronic configuration is [tex]1s^1[/tex]
Fluorine is the 9th element of the periodic table. It is also a non-metal.
Its electronic configuration is [tex][He]2s^22p^5[/tex]
The two elements will share 1 electron to attain stable configuration and form HF compound.
- For b:
Radium is the 88th element of the periodic table having electronic configuration of [tex][Rn]7s^2[/tex]
Let the alkaline earth metal that is not yet discovered be X
The electronic configuration of the element X is [tex][Uuo]8s^2[/tex]
