Answer: Xe, Kr, Ar, Ne
Explanation:
Hope i helped please mark brainliest!
It is in Group 5A => <u>5</u> valence electrons
(A) Naoh + Hno3 == Nano3 + h20.
and it is acid based reaction.
(B) H + Br == Hbr. it is synthesis reaction
and it should be hydrogen gas with bromine gas if that was question then
H2 + Br2 == 2Hbr
(c) 3Agno3 + Alcl3 == Al (No3)3 + 3Agcl
it is double displacement. and we right the polyatomic ion in bracket that’s why no3 is in bracket.
please let me know if you need something
<span>arsenic is the element often used in rat poison.</span>