Mercury is in the 80th position in the periodic table. How many protons does it have?

A. 8

B. 40

C. 80

D. 160

Write the electron configuration of the atom in the third row of the periodic table that has the smallest ei4.

Define gamma (Y) I know that it can stopped by lead

Find the total mass of three diamonds that have masses of 14.2 grams, 8.73 grams, and 0.912 gram

A nurse practitioner orders Medrol to be given 1.5 mg/kg of body weight. if a child weighs 72.6lb and the available stock of Medrol is 20. mg/mL, how many mL do you give to the child

Which option describes a common property of the elements, nitrogen (N), phosphorus (P), arsenic (As) ? Hint: Review your periodic table. They have the same amount of reactivity. They have the same amount of atomic mass.

Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li (s) + N2 (g) → 2Li3N (s) How many moles of lithium are needed to produce 0.60 mol of Li3N when the reaction is carried out in the presence of excess nitrogen?

7. Convert 5.2 cm of magnesium (Mg) ribbon to mm of Mg ribbon.

If you place a crystal substance on a tabletop, return to view it after some time passes, and find it as a powdered substance, which of the following processes most likely took effect? A. Efflorescence B. Distillation

What changes occur in the nuclei of atoms involved in the reactions that fuel nuclear power plants?

Calculate the molar mass for HCN. 0.2703 g/mol 2.703 g/mol 27.03 g/mol 270.3 g/mol