In this task, you are given a question and an answer. Answer "Yes" if the given answer correctly answers the question, otherwise answer "No".

Q: What does the idea of effective nuclear charge tell us, Answer: The term "effective" is used because the shielding effect of negatively charged electrons prevents higher orbital electrons from experiencing the full nuclear charge by the repelling effect of inner-layer electrons.

A: Yes
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Q: what is cta used for, Answer: Computed tomography angiography (CTA) is a computed tomography technique used to visualize arterial and venous vessels throughout the body.

A: Yes
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Q: what is dmitri mendeleev 4, Answer: He formulated the Periodic Law, created his own version of the periodic table of elements , and used it to correct the properties of some already discovered elements and also to predict the properties of elements yet to be discovered!

A:
Yes
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