An atom has an atomic mass of 223 and an atomic number of 87. Calculate the number of neutrons.

The electron configurations of two different atoms are shown below. each yellow electron has a charge of 1−, and the net charge of each nucleus is shown. these atoms will combine with bond. a. an ionic b. a positive c. a negative d. a covalent plzzz mee with !

Aside from human impact, which of the following causes less water vapor production over a small area? (2 pderivartin

How does the atmosphere to make earth livable? check all that apply. causes the seasons contains oxygen provides warmth creates important nutrients blocks harmful energy from the sun plz like !