Question

as the temperature of a solid radioisotope increases, the mode of decay
changes from alpha to beta.
changes from beta to alpha.
changes from either alpha or beta to gamma.
remains the same.
question 2
6 pts
one instrument used to measure ionizing radiation is a
radioactive counter.
curie counter.
roentgen counter.
geiger counter.

Explanation:

For Question 1: Radioactive decay modes (alpha, beta, gamma) depend on the nucleus's instability, not external temperature. Temperature affects atomic motion but not nuclear structure, so decay mode stays the same.
For Question 2: A Geiger counter is a standard instrument that detects ionizing radiation by measuring electrical pulses from ionized gas caused by radiation.

Answer:

Question 1: remains the same.
Question 2: Geiger counter.