The correct statement for the element (M) with atomic weight 39 and electronic configuration 1s22s22p63s23p64s1 is "It belongs to the 4th period".

Here's why:

1. "It is an electronegative element": This statement is not necessarily true. Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. The element in question is Potassium (K), which has a relatively low electronegativity.

2. "It is a transition element": This statement is false. Transition elements are those elements that have partially filled d or f subshells. Potassium is an alkali metal, not a transition element.

3. "It is isotonic with 18Ar36": This statement is false. Isotonic atoms have the same number of neutrons. Potassium-39 and Argon-36 do not have the same number of neutrons.

4. "It belongs to the 4th period": This statement is true. The period number of an element corresponds to the highest energy level that is occupied by electrons. In the case of Potassium, the highest energy level is the 4th energy level (4s1), so it belongs to the 4th period.

Question

The correct statement for the element (M) with atomic weight 39 and electronic configuration 1s22s22p63s23p64s1 is "It belongs to the 4th period".

Here's why:

1. "It is an electronegative element": This statement is not necessarily true. Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. The element in question is Potassium (K), which has a relatively low electronegativity.

2. "It is a transition element": This statement is false. Transition elements are those elements that have partially filled d or f subshells. Potassium is an alkali metal, not a transition element.

3. "It is isotonic with 18Ar36": This statement is false. Isotonic atoms have the same number of neutrons. Potassium-39 and Argon-36 do not have the same number of neutrons.

4. "It belongs to the 4th period": This statement is true. The period number of an element corresponds to the highest energy level that is occupied by electrons. In the case of Potassium, the highest energy level is the 4th energy level (4s1), so it belongs to the 4th period.

Knowee AI · Accepted Answer

The correct statement for the element (M) with atomic weight 39 and electronic configuration 1s22s22p63s23p64s1 is "It belongs to the 4th period".

Here's why:

1. "It is an electronegative element": This statement is not necessarily true. Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. The element in question is Potassium (K), which has a relatively low electronegativity.

2. "It is a transition element": This statement is false. Transition elements are those elements that have partially filled d or f subshells. Potassium is an alkali metal, not a transition element.

3. "It is isotonic with 18Ar36": This statement is false. Isotonic atoms have the same number of neutrons. Potassium-39 and Argon-36 do not have the same number of neutrons.

4. "It belongs to the 4th period": This statement is true. The period number of an element corresponds to the highest energy level that is occupied by electrons. In the case of Potassium, the highest energy level is the 4th energy level (4s1), so it belongs to the 4th period.

An element(M) has atomic weight 39. It electronic configuration is 1s22s22p63s23p64s1. The true statement for that element is It is an electronegative element It is a transition element It is isotonic with 18Ar36 It belongs to 4th period

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