Please list the following for the Element, HYDROGEN Number of protons, number of electrons, and number of neutrons
Period number
Group number
Name of group to which it belongs (i. e., alkali metals, alkaline earth metals, halogens,
noble gases, and so on)

PLEASE INCLUDE ALL INFORMATION THANK YOU! WILL MARK BRAINLIEST IF ANSWERED CORRECTLY

An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

Quantum mechanics applies to subatomic, atomic, nanometer-size, and micrometer-size systems. nanometer, micrometer, and kilometer-size systems. atomic, nanometer-size, and micrometer-size systems. subatomic, atomic, and nanometer-size systems.