Chemistry Regents Exam Review HW 5 (Electrons)

What did John Newlands compare the periodicity of elements to?

• A literary series

• A color spectrum

• A musical scale

• A mathematical sequence

What model did Niels Bohr propose for hydrogen atoms?

• Electrons as static particles

• Electrons in elliptical orbits

• Electrons in circular orbits

• Electrons as random particles

How are electrons better described, according to modern physics?

• As wave-particle dualities

• As stationary entities

• As waves only

• As particles only

What does the 'octet rule' refer to in chemistry?

• Atoms desire 4 electrons in the outer shell

• Atoms desire 6 electrons in the outer shell

• Atoms desire 8 electrons in the outer shell

• Atoms desire 10 electrons in the outer shell

According to the modern model of the atom, electrons are found in ...

• the nucleus of the atom

• circular orbits around the nucleus

• in orbitals which are regions of probable location