Among the following groups of atoms, which have the same outer energy level configurations?

a. h, he

b. li, be, n, ne

c. mg, al, ca, ga

d. n, p, as, bi

Why is pure water is neutral?

What type (s) of intermolecular forces are expected between nocl molecules?

A tetrahedral molecule has ___ regions of high electron density around the central atom. these molecules have central atoms with ___ lone pairs and ___ atoms bonded to them.

True or false:The nucleus is the largest part of the atom and takes up most space

Across a period, how does the electronegativity of a nonmetal affect the acidity of its binary hydride

4.05 kg + 567.95 g + 100.1 g add the correct value using the correct sig figs and or least precise degree of precision. When i did least degree of precision i got 4718.

Dinitrogen pentoxide gas is formed by the reaction of nitrogen trioxide gas and nitrogen dioxide gas balanced equation

In an experiment to test a new drug's effectiveness, one group is given a larger dosage than is typically prescribed, and a second group is given a smaller dosage than is typically prescribed.

Waves move out through the ground from the source of an earthquake. True or false

The 14C content of a wooden harpoon handle found in the remains of an Inuit encampment in western Alaska is 61.9% of the 14C content of the same type of wood from a recently cut tree. How old is the harpoon?