Please help Are two atoms of the same element identical?
Can water stay liquid below zero degrees Celsius?
Can you light diamond on fire?

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

In pqr m< p=60 m< q= 30 and m