Question

If a new element were discovered and it was found to form 1− ions, in which group would you place it in the periodic table?

Answer 1

Group 7, the halogens.
The elements in this group form -1 ions; examples are chlorine and bromine.

Answer 2

Group 17 (or 7A, or VIIA): Halogens.

Further explanation

This group contains the elements fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). These elements occur naturally in a diatomic structure $\boxed{ \ (F_2, Cl_2, Br_2, I_2, At_2). \ }$

• Fluorine and chlorine are in the gaseous phase.
• Bromine is in the liquid phase.
• Iodine is in the solid phase.
• Astatine is a radioactive and solid element.

Halogens are the most highly reactive nonmetals. Therefore, they become negative one charged ions by gaining a single electron to complete their valence shell in the chemical reaction.

Thus, if a new element were discovered and it was found to form 1− ions, we would place it in the periodic table as a member of group 17, also known as group 7A or VIIA or halogens.

Learn more

1. Find out the fraction of the space within the atom is occupied by the nucleus brainly.com/question/10818405
2. Flammability as one of the chemical properties brainly.com/question/1767022
3. Determine the shortest wavelength in electron transition brainly.com/question/4986277

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