Sep 13, 2016 · Is it 8? How did I know that Z=8? Do I have the atomic numbers memorized? There really should be a copy of the Periodic Table beside you if you are doing your …

the decay is an alpha decay process of nucleus and two extra atomic electrons can combine with alpha particle io form He atom. The radioactivity is nuclear process and the nucleus changes …

Statement number (2) is correct, H^(+) can oxidize iron and nickel can reduce Br_2. Standard electrode potentials are used to express the ability of a substance to lose electrons. When you …

For lithium the atomic number is 3, therefore its electronic configuration is ["He"] 2"s"^1 Now ionization potential of "Li"^ (++) ion is same as "I"_3 =Third Ionization Potential) of "Li" Notice …

Explanation: .. elements are characterized by their #"atomic number"#, #Z#, the number of charged particles that inhabit the element's nucleus. So given an isotope, and we simply …

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 …

Why are enzymes considered to be catalyst of reaction? What is the electron configuration of an element with atomic number 3? How do you find the number of protons and neutrons and …

Explanation: #"Number of atoms of Mg"# #-=# #"Mass of metal"/"Molar mass of metal"xxN_A#, where #N_A-="Avogadro's number"=6.022xx10^23*mol^-1#

To find #n# number of atoms in each molecule we use Avogadro's number #6.023xx10^23# We know that #6.023xx10^23# molecules of any substance are equal to its #1# gm mole.

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 …