Answer:
left to right across a period when it decreases and when it increases top to bottom in a group,
hope i helped
Answer:
two hydrogen atoms and one oxygen atom
Explanation:
Waves travel through matter, so I am 99.9% sure that is the answer.
Id look through your lesson to be sure!
NaN₃ is the chemical formula for Sodium Azide
Answer:
Neutral atoms of each element contain an equal number of protons and electrons. The number of protons determines an element's atomic number and is used to distinguish one element from another. ... Together, the number of protons and the number of neutrons determine an element's mass number.
Explanation:
