The Electron in a Hydrogen Atom Has an Orbital Radius $\times$

question 89

Multiple Choice

The electron in a hydrogen atom has an orbital radius of 0.0500 nm.To avoid being pulled into the nucleus by electrostatic attraction,the electron must have an orbital speed of

• A)7.12 km/s
• B)25.2 km/s
• C)1.02 \(\times\) 10⁶ m/s
• D)2.25 \(\times\) 10⁶ m/s
• E)5.0 \(\times\) 10⁸ m/s

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Definitions:

Centration

A cognitive limitation in young children's thinking, marked by focusing on one aspect of a situation while neglecting others, characteristic of the preoperational stage.

Conservation Skills

Cognitive abilities that enable a child to understand that quantity or amount does not change when its form or appearance is altered, a concept developed by Jean Piaget.

Preoperational Thought

A stage in Piaget's theory of cognitive development where children (ages 2-7) begin to engage in symbolic play and struggle with logic and understanding others' perspectives.

Intuitive Reasoning

The process of making decisions on the basis of what feels right or what is instinctively believed to be true without logical reasoning.