GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The modern periodic table is based closely on the ideas he used:
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elements in the different group are similar to each otherthe vertical columns are called periods
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the horizontal rows are called periodsthe vertical columns are called groups
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the elements are arranged in order of decreasing atomic number
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None of the above
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Explanation:
Detailed explanation-1: -The horizontal rows (which Mendeleev called series) are called periods and the vertical columns, groups.
Detailed explanation-2: -The horizontal rows in the modern periodic table are called periods. The modern periodic table contains 7 periods.
Detailed explanation-3: -The periodic table is composed of vertical columns called groups and horizontal rows called periods.
Detailed explanation-4: -The horizontal rows are known as periods and vertical columns in the periodic table are known as groups.
There is 1 question to complete.