Group 7a of the periodic table contains the

a. most reactive nonmetals.

b. most reactive metals.

c. least reactive nonmetals.

d. least reactive metals.

What shape would a molecule with two bound groups and two lone pairs have? A. Trigonal pyramidal B. Tetrahedral C. Linear D. Bent

Give the complete ground-state electron configuration for silicon (si). express the complete electron configuration using superscripts where appropriate. for example, the configuration for li would be entered as 1s^22s^1

Which of these is a direct benefit of using fuel cells in cars? Fuel cells do not need an extra or rechargeable battery to operate the electronics. Fuel cells use hydrogen gas, which can be safely stored in the car's fuel tank.

Give the nuclear symbol for the isotope of beryllium for which a=10? enter the nuclear symbol for the isotope (e. g., 42he).

How are atoms in the same period similar and how are they different?

How many atoms are there in 2.3 grams of H?

Which of the following would dissolve in water, and why? None of these substances would dissolve in water Candle wax, it is a nonpolar substance Motor oil, its primary IMF is London Dispersion Forces Acetic acid, it ionizes into ions when added to

Have a region surrounding the central area called

1. Simplify. | A. O 16 B. O C. 04 D. O

What is the (H+), if the pH of a solution is 3.20?