Calcium atom and Oxygen atom dialogue

Q: Give the number of protons, electrons, and neutrons for Chlorine-37

A: Atomic number:  It is defined as number of protons present in an atom.  The symbol of atomic number…

Q: Which arrangement of elements did Mendeleev find produced a repeating pattern of properties?

A: According to Mendeleev Periodic law, the periodic properties of the elements are repeated after…

Q: For the following isotope, selenium -77, indicate the number of protons, neurons, and electrons.

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Q: Atomic Name Symbol Number silver 53 Br nickel 29 Sn lead 30

A:

Q: What is Joseph Proust contribution atomic theory?

A: He first published his Law of Definite Proportions (or Law of Constant Composition). The essence of…

Q: Argon (Ar) has three naturally occurring isotopes namely: Ar-36, Ar-38, and Ar-40. a) How are these…

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Q: The number of neutrons in the nucleus of the isotope 22Na is

A: The number of neutrons

Q: Determine the number of protons, electrons and neutrons for a neutral atom of silicone given a mass…

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Q: A neutral subatomic particle. a) compound b) mixture c) molecule d) neutron e) atom

A: An atom is made up of neutrons, protons and electrons. Protons are positively charged and electrons…

Q: What is the Law of Multiple of Proportions?

A: Law of Multiple Proportions ----- When two elements react to form two or more compounds, than the…

Q: Atoms are considered.. because theu have mass and other related properties.

A: Atoms are the smallest, indivisible particles that make up every matter of the universe. Subatomic…

Q: ntribution of James Chadwick to [ Choose ] velopment of the atomic model

A: Atom is made up of very tiny particles which is indestructible says in Dalton's atomic theory .

Q: Equation 2 x [C (graphite) + O2 (g) CO2(g)] 2AH1° when they are not included in calculating AHR at…

A: Hess law states for the multistep reaction the enthalpy changes during the reaction is the sum of…

Q: An atom of 131 I contains ________ protons.

A: An atom = 131I  Number of protons = ?

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.