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Chapter 2: 38E (page 46)

The number of protons in an atom determines the identity of the atom. What does the numberand arrangement of the electrons in an atom determine? What does the number of neutrons in an atom determine?

Short Answer

Expert verified

The electron number and arrangement determines the reactivity of atoms. The neutron number determines the identity of isotopes.

Step by step solution

01

Determination of number and arrangement of electrons in an atom.

The arrangement and electron number in an atom will determine the reactivity of atom with all other atoms.

02

Determination of number of neutrons in an atom.

The chemical properties of an atom can be determined by the electrons. The neutron number can be determined by isotope identity.

03

Conclusion

The electron number and arrangement determines the reactivity of atoms. The neutron number determines the identity of isotopes.

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Most popular questions from this chapter

Q.3. We can use the periodic table to tell us something about the stable ions formed by many atoms. For example, the atoms in column 1 always form 11 ions. The transition metals, however, can form more than one type of stable ion. What if each transition metal ion had only one possible charge? How would the naming of compounds be different?

Q.14. Which of the following explain how an ion is formed? Explain your answer.

a. adding or subtracting protons to/from an atom

b. adding or subtracting neutrons to/from an atom

c. adding or subtracting electrons to/from an atom

You have gone back in time and are working with Dalton on a table of relative masses. Following are his data:

0.602g gas A reacts with 0.295g gasB

0.172 g gas B reacts with 0.401 g gasC

0.320 g gas A reacts with 0.374g gas C

a. Assuming simplest formulas (AB,BC, and AC), construct a table of relative masses for Dalton.

b. Knowing some history of chemistry, you tell Dalton that if he determines the volumes of the gases reacted at constant temperature and pressure, he need not assume simplest formulas. You collect the following data:

$6 volumes gas A + 1 volume gas B \to 4 volumes product$

$1 volumes gasB + 4 volume gasC \to 4 volumes product$

$3 volumes gasA + 3 volumes gasC \to 6 volumes product$

Write the simplest balanced equations, and find the actual relative masses of the elements.

Explaining your reasoning.

Question:A certain element has only two naturally occurring isotopes: one with 18 neutrons and the otherwith 20 neutrons. The element forms 1-charged ions when in ionic compounds. Predict theidentity of the element. What number of electrons does the 1- charged ion have?

Question: What are the formulas of the compounds that correspond to the names given in the following table?

Compound Name	Formula
Carbon tetrabromide
Cobalt (II) phosphate
Magnesium chloride
Nickel (II) acetate
Calcium nitrate

See all solutions

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