Why did early astronomers believe in the geocentric model?

2 answers:

alexandr1967 [171]3 years ago

5 0

Ptolemy was an astronomer and mathematician. He believed that the Earth was the center of the Universe. The word for earth in Greek is geo, so we call this idea a "geocentric" theory. ... This flawed view of the Universe was accepted for many centuries.

natita [175]3 years ago

4 0

Ptolemy was an astronomer and mathematician. He believed that the Earth was the center of the Universe. The word for earth in Greek is geo, so we call this idea a "geocentric" theory.

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Identify the quantum numbers for the electron gained when an F2 ion becomes an F3 ion

zhuklara [117]

Answer: n= 3, l= 0 , m= 0 and s=[/tex]\frac{-1}{2}[/tex]

Explanation:

Principle Quantum Numbers : It describes the size of the orbital and the energy level. It is represented by n. Where, n = 1,2,3,4....

Azimuthal Quantum Number : It describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...

Magnetic quantum number : It describes the orientation of the orbital. It is represented as 'm'. The value of m ranges from -l to +l.

Spin quantum number: It describes the spin of the electron. It is represented as 's'. The value of s can be +1/2 or -1/2

$F^{2-}:11: 1s^22s^22p^63s^1$