Protons and electrons are called fundamental particles because they----------
are indivisible
have different charges
are the lightest particles
are found in all matter
Correct answer is D
No explanation has been provided for this answer.
The region around the nucleus where electrons can be located is called?
a spectra
an orbital
a quanta
a field
Correct answer is B
No explanation has been provided for this answer.
CI\(^{-}\)
O\(^{2-}\)
Mg\(^{2+}\)
AI\(^{3+}\)
Correct answer is A
No explanation has been provided for this answer.
63.0
63.6
65.0
69.0
Correct answer is B
No explanation has been provided for this answer.
Potassium trioxonitrate (V) can be obtained from its solution by----------
distillation
evapoartion
crystallization
filtration
Correct answer is C
No explanation has been provided for this answer.