Metals lose electrons
Non metals gain electrons
They do this to gain a full outer shell in order to become stabilised
PH = -log[H₃O⁺]
[H₃O⁺] = 10^-pH
<span>[H₃O⁺] = 10^-2,32
</span>[H₃O⁺] =0,0047863 ≈<u> 4,79×10×10⁻³ mol/dm³</u>
<em>B) -- 4</em><span><em>,79×10⁻³ M</em></span>
All group 7 elements are members of the halogen family, seen on the periodic table of elements. Such as : F, Cl, Br.
a tester is a person who test something especially a new products
