Guess the element!!! This element has 108 protons & 61 neutrons
Ag (Silver)
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15
Nitrogen has 14 mass number and 7 protons. How many neutrons does it have?
7
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15
Magnesium has how many protons?
12
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15
The mass of gold 197 and has 118 neutrons. What is its atomic number?
79
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seesaw
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gold
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fairy
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5
10
15
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25
thief
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25
15
Why is an atom electrically neutral despite having charged particles?
no. electrons = no. protons
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15
Guess the element! This element has 3 protons & electrons
Li (Lithium)
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15
Guess the element!! This element has 88 electrons and 138 neutrons.
Ra (Radium)
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15
Complete this sentence! Nitrogen-14 and Nitrogen-15 are isotopes because they have the same number of ______ but different numbers of ______.
Protons; neutrons
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15
Which one of these element has 0 neutrons? (Xenon, Silver, Hydrogen, Gold, Lithium)
Hydrogen
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15
1. Nitrogen - 14 and Nitrogen 15   |  2. Oxygen - 16 and Carbon - 16   |  3. Kalium 39 and Uranium 238  |  4. Chlorine - 35 and Sulfur - 35.  |   Which one is the right isotopes?
1. Nitrogen - 14 and Nitrogen 15
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boom
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gift
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gift
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baam
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15
Hg (Mercury) has 80 protons, how many electrons does it have?
80
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15
Guess the element!!! This element has 40 protons & 51 neutrons