Which element has the same number of valence electrons as bromine (Br)?
Chlorine (Cl).
Why are sodium (Na) and potassium (K) in the same group on the periodic table?
Why are sodium (Na) and potassium (K) in the same group on the periodic table? Responses They have similar reactivity. They have similar reactivity. They are both colorless. They are both colorless. They are both hard and brittle. They are both hard and brittle. They have similar atomic weights.
To find the element that has the same number of valence electrons as bromine (Br), we first need to determine the number of valence electrons in bromine.
Valence electrons are the electrons in the outermost energy level of an atom. In the case of bromine, it is located in Group 17 (or Group VIIA) of the periodic table. Elements in this group, also known as the halogens, have seven valence electrons.
Now, we can search for another element that has the same number of valence electrons. By referring to the periodic table, we can look for an element in Group 17. The nearby elements are fluorine (F), chlorine (Cl), iodine (I), and astatine (At).
Therefore, the element that has the same number of valence electrons as bromine (Br) is iodine (I), as they both have seven valence electrons.