ਆਧੁਨਿਕ ਆਵਰਤੀ ਸਾਰਣੀ ਅਨੁਸਾਰ ਗਰੁੱਪ ਵਿੱਚ ਉੱਪਰ ਤੋਂ ਥੱਲੇ ਜਾਂਦੇ ਹੋਏ ਤੱਤਾਂ ਦਾ ਧਾਤਵੀ ਗੁਣ----According to modern periodic table while moving down the group the metallic properties of elements----/ आधुनिक आवर्ती सारणी के मुताबिक ग्रुप में ऊपर से नीचे जाते समय तत्वों का धातुत्व गुण ______ *
ਵਧਦਾ ਹੈ / Increases / बढ़ता है।
ਘਟਦਾ ਹੈ / Decreases / घटता है
ਦੋਵੇਂ / Both / दोनों
ਇਨ੍ਹਾਂ ਵਿੱਚੋਂ ਕੋਈ ਨਹੀਂ / None of these / इनमें से कोई नहीं
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There are 7 periods and 18 groups in the modern periodic table.
1. On moving from left to right in a periodic table, metallic character of elements decreases.
Metals have a tendency to lose electrons. In a period, atomic size decreases so it becomes difficult to remove the electrons of the outermost shell.
2. On moving from top to bottom in a periodic table, metallic character of element increases.
As we move down the group, atomic size increases so the electron of the outermost shell is easy to remove and hence metallic character of element increases.
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