Which element in each pair has a greater first ionization energy?
a)lithium, boron
b)magnesium, strontium
c)cesium, aluminum

What is the number of neutrons in an atom with atomic mass of 35

The graph indicates the running route for tobias. which best describes his run? from time 0 to 6, he went fast and then slowed down. from time 6 to 10, he was at his slowest. from time 12 to 14, he went very slow. from time 14 to 18, he went toward the starting point.

How many atomic mass units are equal to 1.672×10−24 g of protons?