is the book in chronological arrangement?
Yes - Brhadaranyaka, Chandogya, Isha, Taittiriya, Aitareya, Kena, Katha, Mundaka, and Prasna Upanishads are all pre-Buddhist and pre-Jain, while Svetasvatara and Mandukya overlap with the earliest Buddhist and Jain literature.
Upanishads
Patrick Olivelle gives the following chronology for the early Upanishads, also called the Principal Upanishads:

Stephen Phillips places the early Upanishads in the 800 to 300 BCE range. He summarizes the current Indological opinion to be that the Brhadaranyaka, Chandogya, Isha, Taittiriya, Aitareya, Kena, Katha, Mundaka, and Prasna Upanishads are all pre-Buddhist and pre-Jain, while Svetasvatara and Mandukya overlap with the earliest Buddhist and Jain literature.
what is the difference between upanishads and vedas All Upanishads are associated with one of the four Vedas. what is upanishads? The Upanishads are late Vedic Sanskrit texts of religious teaching and ideas still revered in Hinduism. are these teaching followed in any other religion too? No - Of all Vedic literature, the Upanishads alone are widely known, and their central ideas are at the spiritual core of Hinduism. what is the main concept of this religious teachings? It deals with meditation, philosophy, and ontological knowledge; along with mantras, benedictions, rituals, ceremonies, and sacrifices. are these teachings part of any book? The Shvetashvatara Upanishad who are the authors? Yajnavalkya, Uddalaka Aruni, Shvetaketu, Shandilya, Aitareya, Balaki, Pippalada, Sanatkumara, Maitreyi and Gargi.
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Upanishads [SEP] Chronology
Some scholars have tried to analyse similarities between Hindu Upanishads and Buddhist literature to establish chronology for the Upanishads. Patrick Olivelle gives the following chronology for the early Upanishads, also called the Principal Upanishads: Stephen Phillips places the early Upanishads in the 800 to 300 BCE range. He summarizes the current Indological opinion to be that the Brhadaranyaka, Chandogya, Isha, Taittiriya, Aitareya, Kena, Katha, Mundaka, and Prasna Upanishads are all pre-Buddhist and pre-Jain, while Svetasvatara and Mandukya overlap with the earliest Buddhist and Jain literature.