Author Question: The nucleus of an electrically neutral iron atom contains 26 protons. How many electrons does this ... (Read 150 times)

michelleunicorn · **on:** Aug 27, 2018

The nucleus of an electrically neutral iron atom contains 26 protons. How many electrons does this iron atom have?

A) 52
B) 26
C) 24
D) none

Question 2

Which of the following are scientific hypothesis?

(i) Stars are made of the lost teeth of children.
(ii) Albert Einstein was the greatest scientist ever to have lived.
(iii) The planet Mars is reddish because it is coated with cotton candy.
(iv) Aliens from outer space have transplanted themselves into the minds of all government workers.
(v) Tides are caused by the moon.
(vi) You were President Abraham Lincoln in your past life.
(vii) A human remains self-aware while sleeping.
(viii) A human remains self-aware after death.
(ix) A human remains self-aware before being conceived.
A) ii, iv, vi
B) i, ii, iii, v, vii, viii
C) i, iii, v, vii, viii
D) All of these statements are scientific hypothesis.