Answer:
Protons = 11
Electrons = 10
Neutrons = 12
Explanation:
The atomic number of an element is the number of protons present in the nucleus of an atom of that element. A neutral atom of an element contains equal number of protons and electrons, therefore, the atomic number is also the electron number for a neutral atom.
The mass number is the sum of proton and neutrons in the nucleus of an atom of an element.
The atomic number of sodium-23, Na-23 is 11 while the mass number is 23.
An atom of sodium that has a net charge of +1 has lost an electron. Therefore, from the above information, the number of protons, neutrons and electrons present in this atom of sodium-23 is as follows:
Protons = 11
Electrons = 11 - 1
Electrons = 10
Neutrons = 23 - 11
Neutrons = 12
For the first one it is C the muscle system
For the second one it is A allow movement in the body
For the third one it is C Skeletal Muscles
Answer:
C
Explanation:
When two atoms share electrons, a covalent bond is formed. The more electrons shared between atoms, the stronger the bond. Single bonds have two electrons shared, double bonds have four electrons shared, and triple bonds have six electrons shared.
Therefore, triple bonds are the strongest as they require more energy to break.
Hope that helps.