Element A has one valence electron. How does its reactivity compare to that of element B, which has four valence electrons?

A) Element A is more reactive.

B) Element A is less reactive.

C) Element A and B have the same reactivity.

What is unique about the orbitals around the nucleus of an atom?

Give an example of a physical property that is also a characteristic property

In converting between units, it is never necessary to use more than one conversion factor. A. True B. False

Balance this equation. _CH4 + _02 - -> _C02 + _H20

An ion has a charge of 2 - and 18 electrons. A) From which atom does this ion form? B) How do you know?

How many grams of sodium ions are in na2so4?

Electron configuration for iron?

Explain how melting is considered endothermic

In the process of covalent bonding, atoms share electrons. This means that * a) Electrons from each atom are attracted to the nucleus of both atoms b) Protons and neutrons attract c) Atoms lose electrons and become ions d) Atoms gain electrons and

Give the full atomic symbol for an atom that has 30 neutrons and an atomic number of 25