What is the maximum number of electrons which can be accomodated in an atom in which the highest principal quantum number is 4? (1) 32
(2) 16
(3) 36
(4) 54

Please help along with the explanation​

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

Read "who built the pyramids? ”. leave this link open while you answer the questions throughout the assignment. give at least two reasons why some people claim the pyramids of giza were constructed by aliens.

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon