Why are the atomic masses of elements usually decimal numbers?

  1. 👍
  2. 👎
  3. 👁
  1. most elements have multiple isotopes ... the atomic mass is an average

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. science

    Why are there only two elements in the first period of the periodic table?(1 point) because the next elements have other things in common and they need to be arranged together because the next elements have other things in common

  2. Chemistry

    1. An atom has 3 protons, 4 neutrons, and 3 electrons. Use the periodic table to determine which atom would have similar chemical properties to this atom. A)12 protons, 12 neutrons, and 12 electrons B)11 protons, 11 neutrons, and

  3. chemistry

    The element rhenium (Re) has two naturally occurring isotopes, 185Re and 187Re, with an average atomic mass of 186.207 amu. Rhenium is 62.60% 187Re, and the atomic mass of 187Re is 186.956 amu. Calculate the mass of 185Re. am i

  4. Science

    The Periodic Table 1) What conclusions can be drawn about the relationship between the arrangement of elements on the periodic table and the patterns observed in their properties? :Properties of elements are related to atomic

  1. Math please check and thank you very much

    Elements are arranged in the periodic table based on various patterns. For example, elements found in the rows near the top A. have higher atomic numbers than the elements in the rows near the bottom. B. all have the same atomic

  2. Chem

    Order the elements S, Cl, and F in terms of increasing atomic radii. I thought the answer was F, S, Cl, but the answer key said it was S, F, CL Why? AR decreases from left to right. Sulfur has one more energy level, so shouldn't

  3. College Chemistry (Hard)

    The easiest fusion reaction to initiate is 1-1H + 1-1H------> 4-2He + 1-0 n The 1-1 indicates a small one above the other on the left side of the symbol of the element.So for 1-0n is a one above a zero on the left side of n

  4. CHEM**

    I just have 2 other questions that I just want to make sure on: Place the following elements in order of decreasing atomic size: tellurium, bromine, argon, cesium, strontium, and selenium. (Te, Br, Ar, Cs, Sr, Se) ~~(or...the

  1. Chemistry

    Classify the substances as atomic elements, molecular elements, molecular compounds, or ionic compounds. CO2, HCl, Al2S3, Cd, F2,Ag,O2,NaCl

  2. physical science

    Periodic law states that when the elements are arranged according to their atomic numbers, this allows elements with similar properties to appear at regular intervals. Predict the group of elements and their number of valence

  3. science

    FeCl3 + 3H2O → Fe(OH)3 + 3HCl Element Mass of an Atom (amu) Fe 56 Cl 35 H 1 O 16 Iron chloride and water react according to the equation shown. The table shows the atomic masses of the elements involved in the reaction. What is

  4. chem

    Bromine consists of two major isotopes with the following percent abundances and atomic masses: 79Br (50.54% and 78.918 amu) and 81Br (49.46% and 80.916 amu). Calculate the average atomic mass of bromine.

You can view more similar questions or ask a new question.