Chemistry

Pregunta	Respuesta
What is the relative mass and relative charge of a proton, neutron and electron?	Relative mass Relative charge Proton 1 +1 Neutron 1 0 Electron 1/2000 -1
What is an isotope?	Isotopes are atoms with the same number of protons but different numbers of neutrons. This gives them different masses.
Why do isotopes of an element have the same chemical properties?	Because they have the same electron configuration and electrons are involved in chemical reactions.
When are ions formed?	Ions are formed when atoms gain or lose electrons.
How do you calculate relative atomic mass?	Add together (Mass number x Percentage/100)
What is an orbital?	A region that can hold up to two electrons with opposite spins.
Shape of an S-orbital?	Spherical.
How many electrons can an S, P and D orbital hold?	S- 2 electrons P- 6 electrons D- 10 electrons

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	Creado por nimo mohamud hace más de 8 años