Uranus was the first planet to be discovered using a telescope. true or false

True

Explanation:

Uranus was the first planet to be discovered by means of a telescope. This planet was viewed with a telescope in 1781 by William Herchel.

Uranus had already been visualized before its discovery as a planet, but it was not given the proper importance, because everyone who viewed it thought it was a star and not a planet. There have been records of uranus visualization since 1690, but telescope visualization was not made until 1781.

what are the two models

explanation:

a electronegativity decreases beacuse the size of nucleus is bigger.