Answer: density or
To determine the toughness of a solid you would have to know how much kinetic energy it absorbed before it broke.
Sodium's atomic number is the same of the electrons, so sodium has 11 electrons.
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<span>A chemical that will ignite spontaneously in air at a temperature of 130 degree fahrenheit (54.4 degree celsius) or below is identified by the term pyrophoric.
Pyrophoric substances are those that ignite spontaneously when in contact with air at 130 °F or below. Some substances that are pyrophoric include Iron Sulfur (FeS) or some metals like finely powdered Uranium. To handle pyrophoric substances, it is required to work in an inert atmosphere (i.e. an atmosphere without oxygen).
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Answer:
Principal Quantum Number (n) = energy level (1s2)
Angular Momentum Quantum Number (<em>l</em>) = sub-shell (1s2)
Magnetic Quantum Number (m<em>i</em>) = specific orbital electron occupies
range of (n) = 1-7
range of (<em>I</em>) = s, p, d , f
Explanation: