Question

1.
The electrons, identified by quantum number
n and I (1) n = 4, l = 1 (II) n = 4, l = 0 (III) n =
3, l = 2 and (IV) n = 3, l = 1 can be placed in
order of increasing energy, from the lowest to the
highest, as
(1) (IV) < (II) < (III) < (1) (2) (11) < (IV) < (1) < (III)
(3) (I) < (III) < (II) < (IV) (4) (III) < (1) < (IV) < (II)
2​

Answer 1

Answer:

When a metal reacts with water, a metal hydroxide and hydrogen are formed. For example: Sodium reacts vigorously with water. Calcium reacts readily with water.

Answer 2

Answer:

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