A. 5
B 10
C.15
D. none
How many electrons does this same element have circling its nucleus?
A. 5
B. 10
C. 15
D none
2006-11-01 05:58:19 · 7 answers · asked by cetinnovations 1 in Science & Mathematics ➔ Chemistry
How many protons does this same element have in its nucleus
A.5
B 10
C15
D none
2006-11-01 06:17:52 · update #1
Atomic number always says how many protons. Every element will always be defined by its unique number of protons. Atomic number 5 will have 5 protons. Electrons don't really weigh anything, so they don't count towards mass number. So what's left? Neutrons. So 10mass units-5for protons=5 neutrons (A)
The number of electrons in a neutral atom must cancel the charge of the protons. Each proton is +1 and each electron is -1. If I have 5 protons in the nucleus, I have +5. A neutral atom should have 0 charge. So 0=+5-(# of electrons) and you get 5 electrons (A)
2006-11-01 06:09:11 · answer #1 · answered by calcu_lust 3 · 0⤊ 0⤋
10- 5= 5 neutrons
If it is a neutral atom then 5 electrons, to compensate the charge of the protons. Otherwise, it has only 2. (you are talking about B: 3+ only)
2006-11-01 06:13:53 · answer #2 · answered by Anonymous · 0⤊ 0⤋
a. 5
2006-11-01 05:59:22 · answer #3 · answered by kahboom 2 · 0⤊ 0⤋
The answer to all 3 questions is 5
2006-11-01 08:29:31 · answer #4 · answered by xox_bass_player_xox 6 · 0⤊ 0⤋
protons + neutrons = atomic mass
protons or electrons = atomic number
so you will have 5 neutrons , 5 protons and 5 electrons
2006-11-01 06:53:01 · answer #5 · answered by source_of_love_69 3 · 0⤊ 0⤋
i think both of them are b put not sure
2006-11-01 06:07:05 · answer #6 · answered by juanita2_2000 7 · 0⤊ 2⤋
AAA
2006-11-01 06:40:58 · answer #7 · answered by Anonymous · 0⤊ 0⤋