Chemistry

What element is located in Group 1, Period 4 of the periodic table? Solution: The element located in Group 1, Period 4 is Potassium (K). Which group contains the Alkali Metals? Solution: Group 1 contains the Alkali Metals. Which group contains the Noble Gases? Solution: Group 18 contains the Noble Gases. Which period is the … Read more

How many valence electrons does carbon (C) have? Solution: Carbon is in Group 14 of the periodic table, so it has 4 valence electrons. How many valence electrons does oxygen (O) have? Solution: Oxygen is in Group 16 of the periodic table, so it has 6 valence electrons. How many valence electrons does potassium (K) … Read more

What is the electron configuration of an oxygen atom? Solution: The electron configuration of oxygen is 1s² 2s² 2p⁴. What is the electron configuration of a sodium (Na) ion (Na⁺)? Solution: The electron configuration of a sodium ion (Na⁺) is 1s² 2s² 2p⁶. How many unpaired electrons are in a carbon (C) atom? Solution: Carbon … Read more

What is the principal quantum number (n) for an electron in the 3s subshell? Solution: The principal quantum number for the 3s subshell is 3. How many orbitals are present in a 4f subshell? Solution: The 4f subshell has 7 orbitals. What are the possible values of the magnetic quantum number (ml) for an electron … Read more

Question: What is the atomic number of an element with 8 protons? Solution: The atomic number is 8. Question: How many protons are in an atom of Fluorine-19 (¹⁹F)? Solution: The atom has 9 protons. Question: Identify the isotope with 6 protons and 8 neutrons. Solution: This isotope is Carbon-14 (¹⁴C). Question: Which subatomic particle … Read more

Question: What is the atomic number of an element that has 16 protons? Solution: The atomic number is 16. Question: How many neutrons does an atom of Carbon-14 (¹⁴C) have? Solution: The atom has 8 neutrons (14 – 6 = 8). Question: Identify the isotope with 17 protons and 18 neutrons. Solution: This isotope is … Read more