Across
1
Unit of heredity
4
Unit of electric potential
5
Fourth state of matter
8
Second lightest element
10
Blocking of light by a celestial body
11
Chemical element in table salt
Down
2
Reddish electrical conductor
3
Basic unit of life
5
Positive particle in nucleus
6
Naturally occurring inorganic solid
7
Path of a planet around the sun
9
The Red Planet