bubbaforbes2005
27.10.2019 •
Physics
Elements are arranged in groups by similar atomic structure on the periodic table. this allows for an element's properties to be predicted based on general periodic trends. one of these trends, electron affinity, increases up a group and to the right along a period and can be defined as the
a) energy required to add an electron
b) energy required to emit an electron
c) energy required to excite an electron
d) energy required to remove an electron
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Ответ:
Your answer is A.
Ответ:
the negative sign in the value of magnification indicates the type of mirror, that the mirror being used is convex, and if it is positive then the mirror being used is concave mirror. The negative sign denotes that the image projected is in the inverted direction.