The element with atomic number 45 is Rhodium (Rh). Rhodium is a transition metal in Group 9, Period 5 of the Periodic Table. Rhodium has 45 electrons in 5 electron shells with 1 electron in the outer shell.
The element with a mass number of 45 is scandium. It has an atomic number of 21, which means it has 21 protons in its nucleus.
Element 45 on the periodic table is rhodium, which has the symbol Rh. Rhodium is a rare transition metal that is commonly used in catalytic converters, jewelry, and electroplating.
The atomic number is 21: The mass number is the sum of protons and neutrons, while the atomic number is the number of protons, designated n. From the statement of the problem, n+n+3 = 45, or 2n = 42, or n=21.
Rhodium (symbol Rh, at. no. 45, at. wt. 103)
A simply formula is the atomic mass of selenium (rounded to the whole number) - atomic number = neutrons. So Selenium 76 has 45 neutrons.
The atomic number always gives the number of protons or electrons. The neutrons are obtained by subtracting the number of protons from the atomic mass. In this example, since 45 is the atomic number, this element has 45 protons. since the mass is 92, the number of neutrons is 92-45= 47. However, this is not really true because the element with 45 as atomic number is rhodium and it has a mass of 103 u and hence a total of 58 neutrons.
45 protons
Scandium is a meta element. Atomic mass of it is 45. Atomic number of it is 21.
Rhodium
The element with a mass number of 45 is scandium. It has an atomic number of 21, which means it has 21 protons in its nucleus.
Fluorine (whose atomic number is 9) and Boron (whose atomic number is 5).
Rh is rhodium. (Atomic number: 45).
The atomic number of rhodium (Rh) is 45.The atomic weight of Rh is 102.91 grams per mole.See the Web Links to the left of this answer for a periodic table with more information about this element!
The element with atomic number 45 is Rhodium (Rh). Rhodium is a transition metal in Group 9, Period 5 of the Periodic Table. Rhodium has 45 electrons in 5 electron shells with 1 electron in the outer shell.
The mass number of an element is the sum of its protons and neutrons. Since Bromine has 35 protons (atomic number) and 45 neutrons, its mass number would be 35 + 45 = 80.
That has an atomic mass of (45 + 56), or 101.
The element Scandium (Sc) has 21 protons in its nucleus, which can be determined using its atomic number. To find the number of neutrons, we can subtract the atomic number from the atomic mass: Scandium has an atomic mass of approximately 45. This gives us 45 - 21 = 24 neutrons in a Scandium atom.