1. Which experimental evidence indicates that: 1) electrons are negatively charged particles?
ii) electrons are the constituents of all atoms?

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Can someone me with questions 15 to 17 plz.

Ahydrogen atom has 1 electron. how many bonds can hydrogen form? a) 1 b) 2 c) 3 d) 4 e) 5