Subatomic particles found on the outermost shell and responsible for the atom's reactivity

Measure mainly of the nuclear particles: protons + neutrons

Value representing the number of protons in an element

Arrangement of elements organized by atomic number

The only element with no neutrons in its nucleus

Which of the following is true for this element?

Which of the following is true for this element?

Og is the chemical symbol of the 118th element in the periodic table of elements. What is the name of this element?

When you have a negative ion of an atom, O^-2 for example, do you have a higher number of protons or electrons?

The atomic mass of an atom is equal to

Creating a brand new element requires loading an atom's nucleus with _____

Mendelevium (101) is formed by firing

All elements in the periodic table are naturally formed in the universe

Californium (98), bombarded with ____ will produce element 118 (Oganesson)

The chemical symbol of lead is __

Which part of an atom is used to identify its properties?