hi i have a science exam on tuesday and i don't understand this question and really need some help.
How many electrons, protons and neutrons in the following: a)Br1-
b)Be2+
c)Ne
d)P1-
e)Fe
I will be happy to critique your thinking. You need to use your periodic table.
hi ok this is my attempt can you please give me some feedback... thanks
a)35 electrons
35 protons
45 neutrons
b)4 electrons
4 protons
5 neutrons
c)10 electrons
10 protons
10 neutrons
d)15 electrons
15 protons
16 neutrons
i don't think this ones right ???
e)26 protons
26 electrons
30 neutrons
i don't think this ones right either???
Hi! I'd be happy to help you with your science exam question. Understanding the number of electrons, protons, and neutrons in an atom or ion requires some knowledge of atomic structure.
a) Br1-:
To determine the number of electrons, protons, and neutrons in Br1-, we first need to know about the element bromine (Br). Looking at the periodic table, we find that bromine has an atomic number of 35, which indicates that it has 35 protons. Since the charge of the ion is -1, it means that the ion has gained one electron. Therefore, the number of electrons is 36 (35 + 1), and the number of neutrons can be calculated by subtracting the number of protons (35) from the mass number.
b) Be2+:
Beryllium (Be) has an atomic number of 4, indicating it has 4 protons. Since the ion is Be2+, it means that the ion has lost two electrons. Therefore, the number of electrons is 2 (4 - 2), and the number of neutrons can be calculated by subtracting the number of protons (4) from the mass number.
c) Ne:
Neon (Ne) has an atomic number of 10, which tells us it has 10 protons. Since it is a neutral atom, it means that the number of electrons is also 10. The number of neutrons can be calculated by subtracting the number of protons (10) from the mass number.
d) P1-:
Phosphorus (P) has an atomic number of 15, which means it has 15 protons. The charge of the ion is -1, indicating that the ion has gained one electron. Therefore, the number of electrons is 16 (15 + 1), and the number of neutrons can be calculated by subtracting the number of protons (15) from the mass number.
e) Fe:
Iron (Fe) has an atomic number of 26, which means it has 26 protons. Since the question does not specify any charge or isotope, we assume it refers to the neutral atom. Therefore, the number of electrons is also 26, and the number of neutrons can be calculated by subtracting the number of protons (26) from the mass number.
Remember, the number of neutrons can vary depending on the isotope of an element, but I have calculated it based on the most common isotope in each case.
I hope this explanation helps you understand how to determine the number of electrons, protons, and neutrons in these atoms or ions. If you have any further questions, feel free to ask!