In the periodic table, vertical columns of elements are called _______ and horizontal rows of elements are called _______.
Answered Feb 05, 2023
Correct Answer - groups, periods
Correct option is: D. Both columns and rows
Correct Answer - `1/2(sqrt3-1)C`
The modem periodic table consists of seven horizontal rows called periods numbered from 1 to 7 and eighteen vertical columns called groups numbered from 1 to 18.
Correct Answer - 81,27
1. Table 2. Database
Correct option is (A) Key
Correct option is (A) Table
D) both B and C
C) atomic numbers
Correct option is A) a, b
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