Fill in the blanks: (a) The horizontal rows in the periodic table are called …………
Fill in the blanks:
(a) The horizontal rows in the periodic table are called …………
(b) On moving across a period from right to left in periodic table, the atomic size of the atom ……….
(c) on moving from right to left in the second period, the number of valence electrons……….
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(a) The horizontal rows in the periodic table are called Periods.
(b) On moving across a period from right to left in periodic table, the atomic size of the atom increases.
(c) on moving from right to left in the second period, the number of valence electrons decreases
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