Need serious help on HW (lots of questions inside)?

Question

Please help me with my hw!!! You dont have to answer all questions but i qould appreciate it if you did i did most of the questions these are just the ones im stuck on (and im not the smartest thing alive so alot of this is hard)

How many electrons are in Fe2+ ion?
A.24 B.26 C. 28 D.56

What is the charge of the nucleus in an atom of oxygen-17?
A.0 B.-2 C.+8 D+17

The nucleus of an atom of colbat -58 contains?
A. 27 protons and 31 neutrons
B. 31 protons and 27 neutrons
C. 58 protons and 58 neutrons
D. 58 protons and 0 neutrons

As a Ca atom undergoes oxidation to Ca2+, the number of neutrons in its nucleus
A. decreses B. remains the same C. increases D. increases,then decreases

An atom of carbon-12 and an atom of carbon-14 differ in
A. atomic mass B.nuclear charge C. atomic number D. number of electrons

Which particles, because of their size, would have a problem passing through paper?
A. beta B. Gamma C. alpha D. omega

Answer 1

How many electrons are in the Fe2+ ion?

In order to figure out how many electrons are in a cation (positive ion), subtract the positive number (2+) from the element's atomic number (in this case, 26). The answer is therefore A (24).



I'm not sure about the others - I havn't had chemistry in a very long time.

Answer 2

Your question references a question approximately 13-sixteen 12 months olds having intercourse. i do no longer think of everyone could make a physically powerful case for a 13 yo having intercourse. i think of it particularly is mush extra healthy for 13-15 yo teenagers to take it sluggish and persist with intercourse play. yet a sixteen 12 months previous? nevertheless short a time in the past by way of fact the 50's, it grow to be taken with none attention that persons might marry and so grow to be sexually energetic while they finished severe college, generally around the age of 17 or 18. in the event that they confirm they gained't have infants, i do no longer particularly see why somebody might desire to merchandise to (a minimum of the countless extra mature) sixteen 12 months olds having intercourse. this is a controversy of biology particularly. My mom's era, the widespread age of onset of menstruation grow to be 14. I have been given my era while i grow to be 10 and grow to be pregnable while i grow to be 11. as we talk's youngster's bodies mature in the previous than even one era in the past. Do you incredibly think of that a man or woman with an person physique and a teenager's suggestions is going to have the skill to stand as much as the hormonal urges for 7 YEARS, until they attain 18? it particularly is not functional or very achieveable. i think of youthful infants might desire to settle for the thank you to discover their sexuality competently, secure the two bodily and emotionally.

Answer 3

B. Gamma

thats the only one i could answer the others were too confusing and this answers is also probably wrong, but whatever