Contact forces include push, pull and friction
Arsenic is Element Number 33 ... it has 33 protons in its nucleus.
You're correct that the stable isotope of the atom is the one with
42 neutrons, for a total Atomic Weight of 75.
Atoms of Arsenic also exist with 41 neutrons and 40 neutrons
in their nucleus, but those are unstable.
The nucleus with 41 neutrons (Atomic Weight = 74) has a 50% chance
of falling apart and becoming a nucleus of Germanium within 80 days.
The nucleus with 40 neutrons (Atomic Weight = 73) has a 50% chance
of falling apart and becoming a nucleus of Germanium within 18 days.
Answer:
Helped to create and retain Earths Atmosphere
hope this helps...
if it does please mark me as brainliest :)
Wire size<span> becomes an </span>electrical hazard<span> when it is under rated for the amount of current (Amps or I) it has to carry.Current is the flow of electrons.</span>
Complete Question
The complete Question is shown on the first and second uploaded image
Answer:
The underlined words are the answers
Part A
Moving from boron to carbon, the intensity of the bulb <u>Increases</u> because Z increases from <u>5</u> to <u>6</u> , The thickness of the frosting <u>stays the same </u> because the core electron configuration is the same for both atoms
Part B
Moving from boron to aluminum the intensity of the bulb <u>Increases</u> because Z increases from <u>5</u> to <u>13</u> . The thickness of the frosting also <u>increases</u> because Al has the core configuration of <u>Ne</u>, while B has the core configuration of <u>He</u>
Explanation:
Here Z denotes the atomic number
Ne denoted the element called Neon and its electronic configuration is

He denoted the element called Helium and its electronic configuration is

B denoted the element called Boron and its electronic configuration is

Looking at its electronic configuration we can see that the core is He
I,e ![[He]\ 2s^2 2p^1](https://tex.z-dn.net/?f=%5BHe%5D%5C%202s%5E2%202p%5E1)
Al denoted the element called Aluminium and its electronic configuration is

Looking at its electronic configuration we can see that the core is Ne
I,e ![[Ne]\ 3s^2 \ 3p^1](https://tex.z-dn.net/?f=%5BNe%5D%5C%203s%5E2%20%5C%203p%5E1)