If the following elements were to form ions, what is the expectant charge? li, n, o, be, br

Br⁻,  Be²⁺, Li⁺ , O²⁻,  N³⁻

Explanation:

Ions are formed when an atom lose or gain the electrons.

There are two types of ions.

Cations and anions

Cations:

When an atom lose the electron cations are formed and atom gain positive charge.

X → X⁺ + 1e⁻

Anion:

When an atom gain electron anion is formed and atom gain negative charge,

X + 1e⁻  → X⁻

In given list of elements Li and Be form positive ions because they easily lose their valance electrons.

Li → Li⁺ + 1e⁻

Be → Be²⁺ + 2e⁻

While oxygen, nitrogen and bromine gain the electrons easily to complete the octet and form negative ions.

Br  + 1e⁻  → Br⁻

O + 2e⁻  → O²⁻

N + 3e⁻  → N³⁻

b. is the answer hoped i        

nuclear fission produces elements that are heavier than helium.

the elements that are used in nuclear fission and their products are much heavier than helium.