The periodic table of elements is an amazing classification tool. There are many things that we chemists do which only require a quick glance at the table to obtain the answer we require. …

May 15, 2017 · 36 neutrons. One way we have of differentiating between various nuclides of the same element is by writing the name of the element followed by a hyphen and the mass …

Feb 11, 2016 · When decaying by alpha emission a nucleus drops by 4 in mass number and 2 in atomic number and emits a helium nucleus (alpha particle) which has mass number 4 and …

May 21, 2015 · This is because an electron changes the proton to one less so Iodine which has an atomic number of 53 will change to atomic number 52, which is Te. And of course the mass …

Feb 4, 2016 · Not by the reaction between potassium chloride, potassium dichromate, and concentrated sulfuric acid. Chlorine gas, "Cl"_2, is not obtained by heating potassium chloride, …

Conversely, CH_3Cl has a central carbon that is surrounded by three hydrogen atoms and one chlorine atom. Now the hydrogens still have the same electronegativity as one another, but the …

What is the pH of pure water at 25.0 °C if the Kw at this temperature is #1.0 x 10-^14#? What does it mean if atoms have the same atomic number but a different atomic mass? What are …

An #Fe^ (2+)# salt is oxidized by elemental chlorine. What occurs to chlorine in this reaction?

1 u = 1.661 ⋅ 10−27kg In your case, you have 1.513 ⋅ 10−25kg ⋅ 1 u 1.661 ⋅ 10−27kg = 91.1 u The closest match to this value is zirconium, Zr, which has an atomic number equal to 40 and a …

We know that ionization potential or the first ionization potential is the energy required to remove the outermost electron from a neutral gaseous atom of an element. Similarly second and third …