30:["$","section",null,{"style":{"background":"#fff","border":"2px solid #1a3a2e","padding":0,"boxShadow":"10px 10px 0 #1a3a2e","marginBottom":40},"children":[["$","div",null,{"style":{"display":"flex","alignItems":"center","gap":12,"padding":"20px 28px","borderBottom":"2px solid #1a3a2e","background":"#f4ead5"},"children":[["$","span",null,{"style":{"fontFamily":"var(--font-caveat), cursive","fontSize":32,"fontWeight":700,"color":"#d97742","lineHeight":0.8},"children":"A."}],["$","span",null,{"style":{"fontFamily":"var(--font-poppins), sans-serif","fontSize":11,"fontWeight":700,"letterSpacing":"0.2em","color":"#1a3a2e"},"children":"VERIFIED ANSWER"}],["$","span",null,{"style":{"marginLeft":"auto","fontFamily":"var(--font-caveat), cursive","fontSize":18,"color":"#1a3a2e88"},"children":"fact-checked by tutors"}]]}],["$","div",null,{"className":"ck-content qna-answer-body","style":{"fontFamily":"var(--font-poppins), sans-serif","fontSize":"13pt","color":"#000","lineHeight":1.7,"padding":"32px 36px"},"dangerouslySetInnerHTML":{"__html":"

Ionization energy is the minimum energy required to remove the outermost electron from a neutral gaseous atom in its ground state, measured in kJ/mol.

Periodic Trend:

Direction	Trend	Reason
Across a period (left → right)	Increases	Nuclear charge increases
Down a group	Decreases	Electrons farther from nucleus

Ionization energy is the energy needed to remove an electron from a gaseous atom, increasing across periods and decreasing down groups.

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