Describe where metals and nonmetals are found on the periodic table

Why does the band of stability curve upward at high atomic numbers? excess neutrons are required due to the repulsion between the protons. atoms with high atomic numbers have a large number of electrons orbiting the nucleus.

Place the items in order from MOST gravitational force (1) to LEAST gravitational force (5).

Two adjacent allowed energies of an electron in a one-dimensional box are 5.4 eV and 9.6 eV. What is the length of the box?

How are visible light and microwaves the same?

What is the mass of a pure platinum disk with a volume of 113 cm3? the density of platinum is 21.4 g/cm3

A projectile is launched over a horizontal surface in such a manner that its maximum height is 3/5 of its horizontal range. Determine the launch angle.

Two identical capacitors are arranged in a circuit. What is the ratio of the equivalent capacitance of the circuit when the capacitors are in series to that when they are in parallel?

A car's position in relation to time is plotted on the graph. What is the car's average velocity for segment C? A) - 4 m/s B) - 0.25 m/s C) 0.25 m/s D) 4 m/s

What percent of my Iodine-131 sample will be left after 7 half-lives?

A 58.0 kg snow skier is on the top of 351 m high hill. After she has gone down a vertical distance of 142 m, what is her mechanical energy? Explain your answer (CER) !