What group does this atom belong? le 786 ie2 1560 ie3 3230 ie4 4360 ie5 16100 ie6 over 200 00

Give the atomic number (Z) and the mass number (A) for each of the following: a. a carbon atom with 8 neutrons b. an aluminum atom with 14 neutrons c. an argon atom with 20 neutrons d. a copper atom with 36 neutrons

How many protons and neutrons are contained in the nucleus of each of the following atoms? In an atom of each element, how many electrons are present? a.2241Ti d.3686Kr b.3064Zn e.3375As c.3276Ge f.1941K

How are protons and neutrons similar? How are they different?

Explain the operation of a cathode-ray tube. Describe the deflection of cathode rays by electrically charged plates placed within the cathode-ray tube. What does this imply about cathode rays?

2-101 Complete the following table: Symbol Atomic number Atomic weight Mass number # of protons # of neutrons # of electrons H 0 Li 4 3 Al 26 58 78 17 20

The element copper (Cu) has an atomic mass of 63.55 amu and has two naturally occurring isotopic forms. Based on this information, indicate whether each of the following statements is true or false? a. All Cu atoms have a mass of 63.55 amu. b. Some Cu atoms have a mass of 63.55 amu. c. Some Cu atoms have a mass less than 63.55 amu. d. Some Cu atoms have a mass greater than 63.55 amu.

How does Daltons atomic theory account for the Law of Conservation of Mass?

Which pair of elements do you expect to be most similar? a. Mg and Ca b. N and Cl c. Al and C d. S and Si

How many protons and neutrons are contained in the nucleus of each of the following atoms? For an atom of the element, how many electrons are present? a.2963Cu b.3580Br c.1224Mg