What element has a atomic mass of 39.9? - Answers
Jun 21, 2024 · The atomic number us unique for each element and positions the element in the Periodic Table. The element with atomic number 39 is Yttrium (Y). Tags Elements and Compounds
What is the atomic number of zirconium? a) 39 b) 40 c) 41 d) 42 ...
Jan 15, 2024 · The atomic number of zirconium is 40, which means it has 40 protons in its nucleus. Therefore the correct answer is b. Explanation: The atomic number of an element is equal to the number of protons found in the nucleus of an atom of that element. For zirconium, this atomic number is 40, which means zirconium has 40 protons in its nucleus.
What is the atomic number of zirconium? a. 39 b. 40 c. 41 d. 42 ...
Jan 28, 2024 · The atomic number of zirconium is 40, designating it as the element with that many protons in its nucleus and identifying its position on the periodic table. Therefore, option B is correct. Explanation: The atomic number is the number of protons found in the nucleus of an atom, which determines the element's identity on the periodic table.
Potassium's atomic number is 19, and its atomic mass is …
Nov 4, 2023 · Potassium has an atomic number of 19, which means it has 19 protons in its nucleus. The atomic mass of potassium is approximately 39, which represents the combined mass of protons and neutrons in the nucleus. To determine the number of neutrons, we subtract the atomic number from the atomic mass. Therefore, 39 - 19 = 20 neutrons.
Potassium's atomic number is 19, and its atomic mass is …
Nov 3, 2023 · The atomic mass is approximately 39, so to find the number of neutrons, we subtract the atomic number from the atomic mass. 39 - 19 = 20 Therefore, potassium has 20 neutrons.
What is the atomic number of zirconium? 39 40 41 42
May 22, 2016 · The electronic configuration is here, Kr belongs to 18th group (noble gas) with atomic number 36 and electrons per shell is 2, 8, 18, 8. Since, atomic number is equal to number of protons and number of electrons, atomic number of zirconium will be 36+2+2=40. Thus, atomic number of zirconium is 40. arrow right.
What is the atomic number of zirconium? A. 39 B. 40 C. 41 D. 42 ...
Zirconium is an element found on the periodic table, and its atomic number is 40. Atomic numbers are specific to each element and do not require calculation; they are obtained by referring to the periodic table. Therefore, the atomic number of zirconium is 40. arrow right.
Consider an isotope with 38 electrons, an atomic number of 39, …
Aug 7, 2023 · c. The atomic number of an element is the same as the number of protons. Here, the atomic number is 39, so there are 39 protons in this isotope. d. The total number of nucleons is the sum of protons and neutrons, which is 39 protons + 48 neutrons = 87 nucleons. However, there might be a typo or experimental error, as the given mass number is 86.
What is the atomic number of zirconium? 39 40 41 42
Nov 27, 2017 · profile. unz. report flag outlined. Zirconium has an atomic number of 40. arrow right. Explore similar answers. messages. Get this answer verified by an Expert. Advertisement.
What is the mass number of an atom of potassium that has 20 …
Mar 3, 2024 · The mass number of the potassium isotope with 20 neutrons is 39, hence correct answer is B) 39. Explanation: The mass number of an atom is the sum of its protons and neutrons. Given that the isotope of potassium has 20 neutrons, we can calculate its mass number. Atomic Number (Protons): The atomic number of potassium (K) is 19.