All of the elements in a family or group have similar chemical properties. which of the following statements best explains why this is true?

a. the elements in a group have the same number of protons in their nuclei.

b. the elements in a group have similar atomic mass numbers.

c. the elements in a group have the same number of valence electrons.

d. the elements in a group have similar atomic numbers.

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change. when the temperature in a room increases from 25°c to 33°c, changes from a solid to a liquid. in a lab, methane and nitrogen are cooled from -170°c to -200°c. the methane freezes and the nitrogen . when gold is heated to 2,856°c it changes from a liquid to a .

What is the polyatamic ion of thiosulfate

What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots