Suppose a new element with an average atomic mass of 22.906 u is discovered on Mars. This element is composed of two isotopes. The most abundant isotope has a natural abundance of 79.890% and an isotopic mass of 23.425 u. Calculate the isotopic mass of the least abundant isotope. isotopic mass:

In the next set of boxes, enter the mass number and atomic number of the alpha particle, which has the same composition as the nucleus of a helium (He) atom. You may need to write the numbers and element symbols below the image.

Identify the element represented by each nucleus A through E as a metal, a nonmetal, or a metalloid. In the drawings, red spheres denote protons and gray spheres denote neutrons. Proton Neutron Drag the appropriate items to their respective bins. Metal BIBO 103 W2A1....docx C A 5,316 B 11 333 A Nonmetal InstallScreenRe....dmg 000 C Metalloid tv N MacBook Air F7 Reset A Help O F8 P W F9 F10

Carbon, nitrogen, and oxygen have 6, 7 and 8 protons in their nucleus.  How many neutrons are in their nucleus as well, for the normal stable isotopes of these elements.

A new element has been discovered with two isotopes having masses of 84.63 amu and 90.63 amu. The average mass is 88.01 amu. Write the isotopic atomic mass that is the most abundant.

There are only two naturally-occuring stable isotopes of lithium, the masses of which are listed in the table below. Use whatever data you need from the ALEKS Periodic Table to calculate the natural abundance of each isotope and complete the table. Round your entry for "Li to 2 significant digits and your entry for 'Li to 3 significant digits. mass natural isotope x10 (amu) abundance Li 6.0151 7Li 7.0160 Continue Submit Assignment 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessibility MacBook Air 80 DII DD F11 F19 F2 F3 F4 F5 F6 F7 F8 F9 F10 C@ # $ % & 2 3 4 5 6 7 8 9

A new synthetic element is found to have two isotopes. One isotope has an abundance of 68.2% and a mass of 296.5 amu. The other isotope has a mass of 299.6 amu. What atomic mass should be written on the periodic table for this new element?

A hypothetical element has two stable isotopes: one isotope has a mass of 106.9051 amu with an abundance of 48.183%, the other isotope has a mass of 108.9048 amu with an abundance of 51.825%. What is the average atomic mass of this element?

*BIUA: Heading 1 Russo One 30 CHD Element: Magnesium Number of Number of Abundance Abundance Name of isotope Mass (amu) (%) (decimal) Protons Neutrons Magnesium-24 23.985 78.99% Magnesium-25 24.986 10.00% Magnesium-26 25.983 11.01% Isotope Mass Abundance