2. 24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass
of 74.61 amu, and 27.2% have a mass of 75.20 amu.
How many protons does this element have?
32
33
no way to know
34

Which of these is the result of scientific research and not engineering? a. a new shoe design that features air cushioning for more comfort and protection b. the creation of glass with uv protection. c. a conclusion about diet commonalities among diabetics. d. the development of a smaller, more compact missile.

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent