Answer:
The effective nuclear charge is the net positive charge experienced by an electron in a polyelectronic atom
Answer:
A white dwarf is what stars like the Sun become after they have exhausted their nuclear fuel. Near the end of its nuclear burning stage, this type of star expels most of its outer material, creating a planetary nebula. Only the hot core of the star remains. ... That means a white dwarf is 200,000 times as dense.
Explanation:
they are cold
they are about the size of Earth
these both are not true
Answer:
rocket fuel burning i think
Answer:
Atomic number
Protons
Explanation:
Elements generally have specific atomic number of protons they are made up of.
An element is a distinct substance that cannot be split-up into simpler substances. Such substance are made up of only one kind of atom.
- Each element has a unique atomic number
- The atomic number is used to differentiate between an element or the other.
- The atomic number is the number of protons in an atom.