An element has three stable isotopes with masses of 27.977 amu, 28.976 amu, and 29.973 amu. The heavier two isotopes have an abundance of 4.68% and 3.09 %, respectively. What is the mass of the element? O 29.251 amu 28.085 amu O27.684 amu 30.107 amu O 28.991 amu

Q: If a nucleus contains 12 protons, how many electrons arein the neutral atom? Explain.

A: An atoms are the smallest indivisible particles of a matter.  Subatomic particles of an atom -…

Q: Changing the number of electrons in an atom changes the atom’s..

A: Atomic Charge

Q: 6) the nucleus is a very small region that contains 99.99% off the atoms mass? true or false

A:

Q: how do i wirte the atomic symbol for the isotope a chlorine atom with 18 neutrons

A: Nuclide /atomic symbol of an atom is shown below:

Q: Which of the following unspecified isotopes is an isotope of 108? The a atom identities have been…

A: Given, symbol of boron atom: 105BWhere, Mass number=10=Number of Protons + Number of Neutrons.Atomic…

Q: The predicted charge for O is (+ and signs are required): This mean: that O (gained or lost, and how…

A: Electronic configuration of O : 1s2 2s2 2p4

Q: formuia for tre feilcwing mcle cules Suppiy the missag what ere likeiy digit. Choose 1 FA tle…

A:

Q: What is correct from multiple choice

A: Dalton’s Atomic Theory: Atoms are the indivisible building blocks of all matter and cannot be…

Q: We learned about three different models describing a stable atom. In three to five sentences, answer…

A: Rutherford compare his model to solar system model . Planets moves around sun and in the same way…

Q: Rutherford's Gold Foil experiment, led to the discovery of a positively charged nucleus and mostly…

A: Rutherford's Gold Foil experiment disproved the plum pudding model of the atom proposed by J.J.…

Q: if the number of electrons is than The overall charge of an atom is the number of protons. B)…

A: Given :

Q: Show that Thomson's atomic model cannot explain Rutherford's experiment

A: According to Thomson's plum pudding atomic model, the mass of an atom is uniformly distributed…

Q: explain how to get the atomic symbol

A: Atomic symbol is way of representation of a particular element that makes easy handling of elements…

Q: Show that Rutherford's experiment can be explained by Rutherford's atomic model

A:

Q: The subatomic particle that is correctly paired with its electrical charge is: A) proton; negative.…

A:

Q: what is atomic mass? how is it computed

A: what is atomic mass? how is it computed?

Q: Predict and test the behavior of a particles fired at a plum pudding model atom

A: The "plum pudding" model given by J J Thomson assumes an atom to be a solid positively charged…

Q: 1. A) Define atom. B) Define mass number, A. C) Define atomic number, Z.

A: We’ll answer the first three subparts. Please submit a new question to get the answer of other two…

Q: An element has 2 naturally occurring isotopes with the following masses and abundances. A. Calculate…

A: Given  2 Naturally occurring Isotopes of an element  Isotope mass = 34.97 amu Percentage abundance…

Q: How is the protons, neutrons, and elctrons calculated for chemical Elements. And it the protons and…

A: -> proton + neutron = atomic mass  -> number of proton = atomic number (Always) -> number…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.