Atoms and Periodic Table

Which two elements have the same number of energy levels?

Which are properties of metals?

How many valence electrons does Boron have?

Which subatomic particle(s) makes up the majority of the mass of an atom?

Which element is the most reactive?

How many valence electrons does Nitrogen have?

How many neutrons are found in Lithium?

Which best describes the location and charge of a proton?

Is Hydrogen a metal, non-metal, or metalloid?

How many protons does Chlorine have?

How are Nitrogen and Phosphorus similar?

What is the charge of an electron?

What do groups on the periodic table have in common?

Which element has similar reactivity to Aluminum?

What do periods on the periodic table have in common?

Which two elements have similar reactivity?

What is the best description for a metalloid?

Which is not a property of a nonmetal?

Which group is the most reactive group of elements?

Is Silicon a metal, nonmetal, or metalloid?

Which element is the most reactive?

Is Calcium a metal, nonmetal, or metalloid?

Which best describes the location and charge of a neutron?

Which subatomic particle(s) determines the reactivity of an atom?

An unknown element has 9 protons, 10 neutrons, and 9 electrons. What is it?

What two subatomic particles are found in the nucleus of an atom?

Which elements is in Group 16, period 3?

Which subatomic particle(s) determines the identity of an atom?