Which of the following are true for alpha particles?
I.α particles are equivalent to 2 
P+ 2 
N.
II.α decay decreases the atomic number by four.
III.α particles are deflected more strongly than e- by magnetic fields,but in the opposite direction.
IV.α particles are easily stopped as they strike matter.
Definitions:
Perceiver Expectations
The assumptions or beliefs that an observer holds about a situation or individual that can influence their perception and interpretation.
Pygmalion Effect
The phenomenon where higher expectations lead to an increase in performance.
Michelangelo Effect
The phenomenon where close partners support one another towards achieving their ideal selves, inspired by Michelangelo's idea of sculpting to reveal the ideal form within.
Self-Fulfilling Prophecy
The process whereby expectations about a person cause him or her to behave in ways that confirm the expectations.
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