What is the electron configuration of Zn+ A. [Ar] 3d10
B. [Ar] 4s2 3d10
C. [Ar] 4s2 3d9
D. [Ar] 4s1 3d10

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.