Volume occupied by electrons Nucleus containing protons and neutrons- -10-4 Å- -1-5 Å– A Figure 2.10 The structure of the atom. A cloud of rapidly moving electrons occupies most of the volume of the atom. The nucleus occupies a tiny region at the center of the atom and is composed of the protons and neutrons. The nucleus contains virtually all the mass of the atom.

Q: Rutherford’s gold foil experiment consisted of firing positively charged alpha particles at a thin…

A: Rutherford alpha particle experiment. He observed that when alpha particles are passed through the…

Q: The nucleus, the massive center of an atom, contains which two particles?

A: Nucleus is the massive part of any atoms . It contains mostly all the mass any element. Nucleus was…

Q: Check all the correct statements. Note: Push yourself to understand why these statements are true or…

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Q: 8. Identify for an atom of 32s : element name: Z, atomic number = A, mass number = number of…

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Q: Given the only naturally occurring isotope of aluminum is Al-27, determine its mass from the…

A: Isotopes of an element are the ones which have the same atomic number but different mass number.…

Q: What composes the nucleus of an atom?

A: There are three basic particles present in an atom.  These are : electron (represented by e), proton…

Q: What is the symbol for an atom of Cd that has 13 extra neutrons and what is that called ?

A: Cd is present alongwith Zn and Hg i.e. it is kept in d-block although it is not a typical d-block…

Q: onsider two isotopes.  write the nuclear symbol for both isotopes how do they differe from each…

A: The word isotope consists of two words, iso means same and topo means position. It is defined as the…

Q: In atoms, protons and neutrons are found (a) only in the nucleus. (b) outside the nucleus. (c)…

A: An atom is composed of three main sub atomic particles; electrons, protons and neutrons. Out of…

Q: List the components of an atom

A: An atom is the smallest particle of matter that participates in a chemical reaction other than…

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

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Q: What letters are used to designate atomic number and mass number in isotopic notation of atoms?

A: There are different symbols are used to exhibit atomic Number and mass number of atoms. Atomic…

Q: The last “missing” element from the first six periods waspromethium, which was finally discovered in…

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Q: Consider a sample of antimony collected from a different solar system. The sample contained 45.8…

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Q: An atom with 2 electrons, 2 protons and 4 neutrons has an atomic number of ...

A: Given -> Number of electrons = 2 Number of proton = 2 Number of neutron= 4

Q: Átom?

A: Step 1:The entire universe is composed of energy and matter. Anything around us that has holds mass…

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.