Answer:
Neutrons
Explanation:
An isotope has more or less number of neutrons in the nucleus.
The nucleus of an atom is made up of two fundamental particles, the protons and the neutrons. Protons are positively charged particles in an atom. Neutrons do not carry any charges whatsoever.
- Isotopy is the existence of two or more atoms of the same element having the same atomic number but different mass numbers due to the differences in the number of neutrons.
- Isotopes differ in masses due to the number of neutrons they contain.
- Therefore, they show similar chemical properties.
Answer:
Pythagoras was the first ancient astronomer to suggest that there was a harmony of the spheres, and that the movement of the planets, sun, moon and stars could be described by whole numbers and mathematical precision. His other discovery was that the morning and evening star are the same thing, the planet Venus.
Explanation:
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Answer:
the sun is more brighter than white dwarfs
because of above reason.
The compound ch3ch2-sh is in the organic family know as c. thiols
Proton:
Positively charged
Inside nucleus
Mass - 1
Electrons:
Negatively charged
Outside the nucleus
Mass - 1/2000
