It’s Calcium hope that helps!
I think it's Letter c.13 if I'm not mistaken
Two protons and two neutrons are emitted and trapped as materials like uranium and thorium deep underground decay into radium and thorium, respectively. These alpha-particles transform into stable helium atoms as they take on electrons from their surroundings.
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What elements go through alpha decay?</h3>
Alpha decay usually occurs in heavy nuclei such as uranium or plutonium, and therefore is a major part of the radioactive fallout from a nuclear explosion.
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Where does alpha decay occur?</h3>
Alpha decay occurs most often in massive nuclei that have too large a proton to neutron ratio. An alpha particle, with its two protons and two neutrons, is a very stable configuration of particles.
Learn more about alpha decay here:
brainly.com/question/1898040
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The spherical object will float and the square object will sink to the bottom of the fluid as it has greater density. :)
It is false, the atomic number is the number of protons and/or electrons in an atom on an element.
