Exam 4: Chemical Foundations: Elements, Atoms, and Ions

Which of the following statements are true? I. The number of protons in an element is the same for all neutral atoms of that element. II) The number of electrons in an element is the same for all neutral atoms of that element. III) The number of neutrons in an element is the same for all neutral atoms of that element.

Write the name for Zr. ______________

The mass number of an atom equals

How many of the following did Dalton not discuss in his atomic theory? isotopes Ions Protons Electrons Neutrons

Determine the number of protons and the number of neutrons in an atom of I-127.

An atom with 15 protons and 16 neutrons is an atom of

The symbol for lead is

Write the symbol for manganese. ______________

Determine the number of protons and the number of neutrons in an atom of Pb-207.

How many electrons are present in a bromine atom with a mass number of 87?

Determine the number of protons and the number of neutrons in an atom of Sn-118.

¹⁵N and ¹⁵O are isotopes.

Which pair have approximately the same mass?

How many atoms are represented by one formula unit of aluminum chromate, Al₂(CrO₄)₃?

Determine the number of protons and the number of neutrons in an atom of Hg-201.

Hydrogen has four naturally occurring isotopes.

The symbol P stands for the element

The symbol for the element mercury is

Write the symbol for carbon. ______________

The first scientist to develop the theory that all atoms of a given element are identical was