I looked through the electronic database before i found what i was looking for.

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

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

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons