As you go from a point where a gravitational field is strong to a ...

[V@ndy87]

As you go from a point where a gravitational field is strong to a point where the gravitational field gets weaker, the gravitational field lines get farther apart.
  Indicate whether the statement is true or false

Question 2

What is needed, in addition to the parts of the Bohr model used to calculate the energies of a hydrogen atom, to understand the periodicity of the elements?
 a. An understanding of the photoelectric effect.
  b. The calculated radii of the orbits in which electrons move.
  c. The principle that alkali metals (in the column of the Periodic Table containing lithium, sodium, potassium, etc.) have their outer shell of electrons filled.
  d. The principle that atoms have shells that each hold a certain number of electrons, with filled shells being the most stable.
  e. The principle that the noble gas elements accept electrons easily from other atoms.

[jomama]

Answer to Question 1

T

Answer to Question 2

d

[V@ndy87]

Excellent

[ttt030911]

TYSM