5.
Which statement accurately describes the atoms of a specific element?
A zinc‚ Zn‚ atom contains 30 protons inside the nucleus and 30 electrons outside the nucleus.
A scandium‚ Sc‚ atom contains 45 electrons outside the nucleus and 21 neutrons inside the nucleus.
An indium‚ In‚ atom contains 115 protons inside the nucleus and 49 neutrons outside the nucleus.
An aluminum‚ Al‚ atom contains 27 electrons and 27 protons inside the nucleus.
word party
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Technically, none of the statements is completely accurate but the first one about Zn is the closest. Protons and electrons are correct but the statement doesn't list the number of neutrons.
idk
To find the statement that accurately describes the atoms of a specific element, we need to examine the atomic number and atomic mass of each element.
1) Zinc (Zn) has an atomic number of 30, which means it has 30 protons in its nucleus. The statement "A zinc‚ Zn‚ atom contains 30 protons inside the nucleus and 30 electrons outside the nucleus" accurately describes the number of protons in a zinc atom. However, the statement is incorrect about the number of electrons outside the nucleus. The number of electrons outside the nucleus is equal to the number of protons (in an electrically neutral atom), so it should also be 30.
2) Scandium (Sc) has an atomic number of 21, so it has 21 protons in its nucleus. The statement "A scandium‚ Sc‚ atom contains 45 electrons outside the nucleus and 21 neutrons inside the nucleus" is incorrect because it states that Scandium has 45 electrons outside the nucleus, which is not equal to the number of protons. The number of electrons should be equal to the number of protons.
3) Indium (In) has an atomic number of 49, so it has 49 protons in its nucleus. The statement "An indium‚ In‚ atom contains 115 protons inside the nucleus and 49 neutrons outside the nucleus" is incorrect because it states that Indium has 115 protons inside the nucleus, which is not equal to the atomic number. The atomic mass is the sum of the protons and neutrons, so 115 protons would mean a much higher atomic number.
4) Aluminum (Al) has an atomic number of 13, so it has 13 protons in its nucleus. The statement "An aluminum‚ Al‚ atom contains 27 electrons and 27 protons inside the nucleus" is incorrect because it states that aluminum has 27 protons inside the nucleus, which is not equal to the atomic number.
Therefore, the correct statement is: "A zinc‚ Zn‚ atom contains 30 protons inside the nucleus and 30 electrons outside the nucleus."