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VikaD [51]
4 years ago
9

Chemistry

Biology
1 answer:
AnnyKZ [126]4 years ago
7 0
1) Protons, Neutrons, Electrons
1) Protons are positive, electrons are negative, and neutrons are neutral/have no charge

2) Identity

3) Protons, Electrons (neutral atom), same

4) mass number, nucleus

5) isotope, same

6) Lithium: LI, 3
Bromine: Br, 35
Iron: Fe, 26
Copper: Cu, 29
Oxygen: O, 8
Mercury: Hg, 80
Krypton: Kr, 36
Helium: He, 2

7) Uranium: U, 92
Chlorine: Cl, 17
Boron: B, 5
Iodine: I, 53
Antimony: Sb, 51
Xenon: Xe, 54

8) a. Iron (Fe)
b. Iodine (I)
c) Helium (He)
d) Calcium (Ca)
e) Lead (Pb)
f) Hydrogen (H)

9) a. Yes
b. No
c. Yes
d. No

hope this helps!
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