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The average atomic mass of carbon – 12 and carbon – 14 is:
0
Between 12 u and 14 u
12 -
Same atomic mass
The same number of protons
10+
23 u
40 u
The charge of nucleus of the element neon Ne (Z = 10, A = 20)is
0
Between 12 u and 14 u
12 -
Same atomic mass
The same number of protons
10+
23 u
40 u
(Z =13, A=27)X and (Z =14, A =27)X have the:
0
Between 12 u and 14 u
12 -
Same atomic mass
The same number of protons
10+
23 u
40 u
The atomic mass of a sodium atom that has 11 protons, 11 electrons and 12 neutrons is:
0
Between 12 u and 14 u
12 -
Same atomic mass
The same number of protons
10+
23 u
40 u
The charge of a fluorine atom that has 9 protons, 9 electrons and 11 neutrons is:
0
Between 12 u and 14 u
12 -
Same atomic mass
The same number of protons
10+
23 u
40 u
Isotopes have:
0
Between 12 u and 14 u
12 -
Same atomic mass
The same number of protons
10+
23 u
40 u
The atomic mass of the element calcium Ca (Z = 20, A = 20) is:
0
Between 12 u and 14 u
12 -
Same atomic mass
The same number of protons
10+
23 u
40 u
The charge of the electron cloud of the element magnesium Mg (Z= 12, A = 24) is::
0
Between 12 u and 14 u
12 -
Same atomic mass
The same number of protons
10+
23 u
40 u
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