1. an atom of silicon with 15 neutrons.\n\n○ element name:\n\n○ protons:\n\n○ neutrons:\n\n○…

1. an atom of silicon with 15 neutrons.\n\n○ element name:\n\n○ protons:\n\n○ neutrons:\n\n○ electrons:\n\n2. an atom with 79 protons and 118 neutrons.\n\n○ element name:\n\n○ protons:\n\n○ neutrons:\n\n○ electrons:\n\n3) which of the following best defines an isotope?\na) atoms of different elements with the same number of neutrons.\nb) atoms of the same element with the same number of protons but a different number of neutrons.\nc) atoms of the same element with the same number of neutrons but a different number of protons.\nd) atoms with the same mass number but different atomic numbers.

1. an atom of silicon with 15 neutrons.\n\n○ element name:\n\n○ protons:\n\n○ neutrons:\n\n○ electrons:\n\n2. an atom with 79 protons and 118 neutrons.\n\n○ element name:\n\n○ protons:\n\n○ neutrons:\n\n○ electrons:\n\n3) which of the following best defines an isotope?\na) atoms of different elements with the same number of neutrons.\nb) atoms of the same element with the same number of protons but a different number of neutrons.\nc) atoms of the same element with the same number of neutrons but a different number of protons.\nd) atoms with the same mass number but different atomic numbers.

Answer

Explanation:

Step1: Identify element name for silicon

Silicon is the element name.

Step2: Determine number of protons for silicon

Silicon has an atomic number of 14, so protons = 14.

Step3: Given number of neutrons for silicon

Neutrons = 15 (given).

Step4: Calculate number of electrons for silicon

In a neutral atom, electrons = protons, so electrons = 14.

Step5: Identify element name for atom with 79 protons

The element with 79 protons is gold.

Step6: Determine number of protons for gold

Protons = 79 (given).

Step7: Given number of neutrons for gold

Neutrons = 118 (given).

Step8: Calculate number of electrons for gold

In a neutral atom, electrons = protons, so electrons = 79.

Step9: Define isotope

Isotopes are atoms of the same element with the same number of protons but a different number of neutrons.

Answer:

  1. Element Name: Silicon Protons: 14 Neutrons: 15 Electrons: 14
  2. Element Name: Gold Protons: 79 Neutrons: 118 Electrons: 79
  3. B. Atoms of the same element with the same number of protons but a different number of neutrons.