Oxygen has an atomic number of 8 and an atomic mass of 16. How many valence elec
ID: 3506090 • Letter: O
Question
Oxygen has an atomic number of 8 and an atomic mass of 16. How many valence electrons does it have?
2
4
6
8
16
An atom with 12 electrons, 13 neutrons, and 11 protons is a(n) __________.
anion
cation
free radical
isotope
The anatomical position is used ________.
rarely, because people don't usually assume this position during waking moments
only when a body is lying down one one's back rather than stomach
as a standard reference point for directional terms regardless of the actual position of the body
for proper placement of a patient or a cadaver upon an operating table in order to reach all major organs
2
4
6
8
16
Explanation / Answer
Q1.Valence electrons are the one on the outer most shell.Oxyge has an atomic number 8.First electron shell holds 2 electrons. 8-2= 6. Hence the option is 6
Q2.An atom with 12 electrons, 13 neutrons, and 11 protons is an Isotope.
Q3.The anatomical position is used as a standard reference point for directional terms regardless of the actual position of the body
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