A. isotopes only hve different mass which is caused by additional/lesser neutron. protons and electrons number are fixed
Answer:
The intercostal muscles also stabilize the chest wall; in full inspiration they contract to prevent the intercostal spaces being sucked inwards by the negative intrathoracic pressure generated by contraction of the diaphragm.
Explanation:
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Answer:
NaCl is an electrovalent compound because the sodium and chlorine atoms give one electron from their outermost shells to each other in order to complete their octets
Explanation:
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A dynamometer is used in measuring force!