Identify the element that contains 87 electrons

What process causes dissolved substances to be left behind to form minerals after water in lakes or ponds evaporates?

Some plants can grow from both blank and blank

Explain how you can use an atom's mass number and atomic number to determine the number of protons, electrons, and neutrons in the atom.

1. To make a peanut butter and jelly sandwich, you need 2 slices of bread, 2 tablespoons of peanut butter, and 1 tablespoon of jelly. You have 6 slices of bread, 12 tablespoons of peanut butter, and 4 tablespoons of jelly.

In Rutherford's model of the atom, where are the electrons and protons located? A. The electrons orbit the protons, which are at the center of the atom. B. The electrons and protons move throughout the atom. C.

What change into velocity

Would you expect the h atoms to remain bonded to each other, or would the molecule fall apart?

Conductivity in a metal results from the metal atoms having (1) high electronegativity (2) high ionization energy (3) highly mobile protons in the nucleus (4) highly mobile electrons in the valence shell

All atoms are neutral. explain the basis of this fact

What is the ph of a solution containing 0.12mol/l of nh4cl and 0.03 mol/l of naoh (pka is 9.25) ?