Join or be joined securely to something else, typically by means of an adhesive substance, heat, or pressure.
Answer: Yes! you're all good. Alkali metals in group 1 are the most metallic :)
Isotopes of elements have same atomic numbers and different mass number(atomic masses).
Answer:
A strong acid
Any strong acid (such as HCl, HBr, or 
) will completely dissociate forming a very weak conjugate base and H3O which will be acidic.
