Question

1. ____ ti(so4)2
2. ____ 2ce2(so4)3

multiple choice

1. ____ the number of protons plus neutrons equals the

a) atomic number c) number of valence electrons
b) mass number d) the number of electrons

1. ____ an atom with an overall positive or negative charge is called

a) neutral atom c) ion
b) isotope d) valence electron

1. ____ when electrons occupy the lowest energy levels available to them the electrons are said to be in

a) the excited state
b) a radiation state
c) a deficient state
d) the ground state

1. ____ the relationship between the energy of an electron and the electron’s distance from the nucleus is basically:

a) the greater the energy the farther the electron is from the nucleus
b) the greater the energy the closer the electron is to the nucleus
c) the distance of the electron from the nucleus is unrelated to the electron’s energy
d) electrons of all energies remain the same distance away from the nucleus

1. ____ the isotopes of an element have the same

Explanation:

1. The mass number of an atom is the sum of protons and neutrons in its nucleus.
2. An ion is an atom that has gained or lost electrons, resulting in a net positive or negative charge.
3. Electrons in the lowest - energy levels are in the ground state.
4. Electrons with higher energy are located farther from the nucleus.
5. Isotopes of an element have the same number of protons (atomic number).

Answer:

1. B. mass number
2. C. ion
3. D. the ground state
4. A. the greater the energy the farther the electron is from the nucleus
5. (No options provided for 47, but the key concept is that isotopes have the same atomic number)