According to the periodic table, how many electrons does gallium (#31) have in its valence level?

3

13

31

2

According to the law of conservation of mass, mass is neither created nor destroyed in any ordinary chemical reaction. Which of the following is a demonstration of this law?

Which of the following pairs of atoms do NOT exhibit a covalent bond? Cs and F O and O S and O P and Cl

What contributes the most to the volume of an atom the nucleus or the electron?

B) You have 665.46 grams of calcium chloride and 939.96 grams of aluminum carbonate available. Calculate the theoretical grams of Calcium carbonate using stoichiometric calculation.

What is the mass number of an ion that has 83 protons, 80 elections, and 126 neutrons

Objects and substances in motion is I

If you were to remove an electron from a sodium atom that has eleven protons, what would be the electrical charge of the ion?

The atomic mass of fluorine in 19.0 amu, so the molar mass is?

A rod shaped organism with no nucleus commonly found in Garbage will most likely belong to which kingdom

Alka-Seltzer is a solid mixture of two substances, sodium bicarbonate (NaHCO3) and citric acid (H3C6H5O7). The substances react to form water, carbon dioxide (CO2), and Na3C6H5O7.