It has 49 electrons as well. The amount of protons and electrons are equal.
Answer:
Antimony, it increases as it goes across a period and decreases as it goes down a group. Does potassium or lithium have the smaller atomic radius? Lithium, because as you move across a period it gets weaker and down a group, it gets stronger.
Answer:
D.
Explanation:
You try to get 8 electron on the outermost "shell" so you have no left over or "valence" electrons.
Answer:
18 neutrons
Explanation:
- The atomic number of sulfur is 16.
- Atomic number indicates the number of protons in the nucleus of an atom.
- Neutrons are found in the nucleus of an atom together with the protons and account for the difference in the mass number among isotopes of an element.
- The sum of neutrons and protons gives the atomic mass number of an element.
- Therefore; given the mass number and the atomic number(number of protons) we can calculate the number of neutrons.
Number of protons = 16
Mass number = 34
Number of neutrons = mass of number - number of protons
= 34 - 16
= 18 neutrons
It is a physical change when cream mixes with
coffee, it changes the color of the coffee. When you add more or less cream there
is a color change depending on the consistency of cream. The
properties are not changes and a no new compound is formed as in chemical
change with a reaction of two compounds, a new compound is formed with
different properties. So it is a physical change.