Keyword Analysis & Research: define effective nuclear charge

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
define effective nuclear charge	0.88	0.8	8521	67	31
define	0.69	0.9	4517	12	6
effective	0.93	0.1	5497	18	9
nuclear	0.55	0.7	360	11	7
charge	0.44	0.5	6667	7	6

Keyword	CPC	PCC	Volume	Score
define effective nuclear charge	0.46	0.9	2564	32