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Match it!
Match it! Select the correct answer from the pull down...Good luck!
Which following statements is true?
72 protons, 106 neutrons, 72 electrons
zinc (Zn)
Sodium has one more electron than neon.
N, P, As, Sb, Bi
+25
The number of protons
Electron placement determines an atom’s reactivity.
The number of valence electrons in the unknown element
What best explains why sodium is more likely to react with another element than an element such as neon?
72 protons, 106 neutrons, 72 electrons
zinc (Zn)
Sodium has one more electron than neon.
N, P, As, Sb, Bi
+25
The number of protons
Electron placement determines an atom’s reactivity.
The number of valence electrons in the unknown element
A chemist is identifying the elements present in a sample of seawater. What characteristic of an element’s atoms always determines the element’s identity?
72 protons, 106 neutrons, 72 electrons
zinc (Zn)
Sodium has one more electron than neon.
N, P, As, Sb, Bi
+25
The number of protons
Electron placement determines an atom’s reactivity.
The number of valence electrons in the unknown element
Which of the following list the elements in order, from those having the fewest protons to those having the greatest number of protons?
72 protons, 106 neutrons, 72 electrons
zinc (Zn)
Sodium has one more electron than neon.
N, P, As, Sb, Bi
+25
The number of protons
Electron placement determines an atom’s reactivity.
The number of valence electrons in the unknown element
How many protons, neutrons, and electrons are present in an atom of hafnium, Hf, with a mass number of 178?
72 protons, 106 neutrons, 72 electrons
zinc (Zn)
Sodium has one more electron than neon.
N, P, As, Sb, Bi
+25
The number of protons
Electron placement determines an atom’s reactivity.
The number of valence electrons in the unknown element
Atoms of which of the following elements are MOST similar in atomic mass to copper (Cu) atoms?
72 protons, 106 neutrons, 72 electrons
zinc (Zn)
Sodium has one more electron than neon.
N, P, As, Sb, Bi
+25
The number of protons
Electron placement determines an atom’s reactivity.
The number of valence electrons in the unknown element
An atom has 25 protons, 30 neutrons, and 25 electrons. What is the charge of the atom’s nucleus?
72 protons, 106 neutrons, 72 electrons
zinc (Zn)
Sodium has one more electron than neon.
N, P, As, Sb, Bi
+25
The number of protons
Electron placement determines an atom’s reactivity.
The number of valence electrons in the unknown element
When trying to identify an unknown element, a scientist determines what other elements the unknown element reacts with chemically. Which property of the unknown element determines the other elements it reacts with?
72 protons, 106 neutrons, 72 electrons
zinc (Zn)
Sodium has one more electron than neon.
N, P, As, Sb, Bi
+25
The number of protons
Electron placement determines an atom’s reactivity.
The number of valence electrons in the unknown element
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