Taking into account the atomic numbers (and not specific isotopes of each element) this list contains the radiactive elements ir order of atomic number.
The atomic number is Z. <span><span> </span><span>Tecnecium, Tc : Z = 43
<span>Prometium, Pm: Z = 61
</span></span>P<span>olonium, Po: Z = 84
</span><span>Astatine, At: Z = 85
</span><span>Radon, Rn: Z = 86
</span><span>Francium, Fr: Z = 87
</span><span>Radium, Ra: Z = 88
Actinium Ac: Z = 89
</span>Thorium, Th: Z = 90
Protactinium, <span>Pa: Z = 91
<span /></span><span>Uranium, U: Z = 92
Neptunium, Np: Z = 93
</span>Plutonium, <span>Pu: Z = 94
<span /></span><span>Americium, Am: Z = 95
</span><span>Curium, Cm: Z = 96
<span /></span><span>Berkelium, Bk: Z = 97
Californium, Cf: Z = 98
</span><span>Einstenium, Es: Z = 99
</span>Fermium, Fm: Z = 100
<span /><span>Mendelevium, Md: Z = 101
</span><span>Nobelium, No: Z = 102
</span><span>Lawrencium, Lr: Z = 103
</span><span>Rutherfordium, Rf: Z = 104
</span><span>Dubnium, Db: Z = 105
</span><span>Seaborgium, Sg: Z = 106
</span><span>Bhorium, Bh: Z = 107
</span><span>Hassium, Hs: Z = 108
</span><span>Meitnerium, Mt: Z = 109
</span><span>Darmstadium, Ds: Z = 110
</span><span>Roentgenium, Rg: Z = 111
</span><span>Copernicium, Cn: Z = 112
</span><span><span>Nihonium, </span>Nh: Z = 113
</span><span>Flerovium, Fl: Z = 114
</span><span><span>Moscovium</span>, Mc: Z = 115
</span><span>Livermorium, Lv: Z = 116
</span><span>Tennessine, Ts: Z = 117
</span><span>Oganesson, Og: Z = 118
</span></span>Remeber, other elements, although are not radiactive, do have radiactive isotopes.
The concentration of hydroxide ions is 3.02*10⁻³ M
Explanation:
The pOH (or OH potential) is a measure of the basicity or alkalinity of a contamination and is defined as the negative logarithm of the activity of the hydroxide ions. That is, the concentration of OH- ions:
pOH= -log [OH-]
The pOH has a value between 0 and 14 in aqueous solution, the solutions with pOH being greater than 7 being acidic, and those with pOH less than 7 being basic.
If pOH= 2.52 then
2.52= -log [OH-]
[OH-]= 3.02*10⁻³ M
<u><em>The concentration of hydroxide ions is 3.02*10⁻³ M</em></u>
A compound is a substance that has two or more chemical elements whose atoms are bonded together. These atoms are chemically bonded in specific ways and in detailed proportions, and the substances cannot be readily separated through simple physical means.
The pH of 0.35 M of CH₃NH₂ is 12.09 and the for methylamine is 4.4 x 10⁻⁴.
<h3>What is pH?</h3>
pHis the quantitative measure of acidity and basicity of an aqueous or other liquid solution. The scale range goes from 0 to 14. Water has a pH of 7 and is neutral in nature.
<h3>What is dissociation constant?</h3>
The dissociation constant is an equilibrium constant that describes the dissociation or ionization of a base or an acid
describes the dissociation of an acid
describes the dissociation of a base
For methylamine,
Initial concentration of methylamine = 0.35 M
Initial concentration of products = 0
Let, at equilibrium concentration of CH₃NH₂ = 0.35 - x
Then, concentration of CH₃NH₃⁺ and OH⁻ is x and x respectively
The dissociation constant for methylamine, = 4.4 x 10⁻⁴
pOH = -log[OH] = -log(0.0124) = 1.91
pH + pOH = 14
pH = 14 - 1.91 = 12.09
Thus, the pH of methylamine is 12.09 and is 4.4 x 10⁻⁴