313362 Those elements impart colour to the flame on heating in it, the atoms of which require low energy for the ionisation (i.e., absorb energy in the visible region of spectrum). The elements of which of the following groups will impart colour to the flame?

313363 The elements which occupy the peaks of ionisation energy curve are

313364 Assertion :
Boron has a smaller first ionisation enthalpy than beryllium.
Reason :
The penetration of a 2s electron to the nucleus is more than the 2p electron hence 2p electron is more shielded by the inner core of electrons than the 2s electrons.

313365 The incorrect statement among the following is

313362 Those elements impart colour to the flame on heating in it, the atoms of which require low energy for the ionisation (i.e., absorb energy in the visible region of spectrum). The elements of which of the following groups will impart colour to the flame?

313363 The elements which occupy the peaks of ionisation energy curve are

313364 Assertion :
Boron has a smaller first ionisation enthalpy than beryllium.
Reason :
The penetration of a 2s electron to the nucleus is more than the 2p electron hence 2p electron is more shielded by the inner core of electrons than the 2s electrons.

313365 The incorrect statement among the following is

313362 Those elements impart colour to the flame on heating in it, the atoms of which require low energy for the ionisation (i.e., absorb energy in the visible region of spectrum). The elements of which of the following groups will impart colour to the flame?

313363 The elements which occupy the peaks of ionisation energy curve are

313364 Assertion :
Boron has a smaller first ionisation enthalpy than beryllium.
Reason :
The penetration of a 2s electron to the nucleus is more than the 2p electron hence 2p electron is more shielded by the inner core of electrons than the 2s electrons.

313365 The incorrect statement among the following is

313362 Those elements impart colour to the flame on heating in it, the atoms of which require low energy for the ionisation (i.e., absorb energy in the visible region of spectrum). The elements of which of the following groups will impart colour to the flame?

313363 The elements which occupy the peaks of ionisation energy curve are

313364 Assertion :
Boron has a smaller first ionisation enthalpy than beryllium.
Reason :
The penetration of a 2s electron to the nucleus is more than the 2p electron hence 2p electron is more shielded by the inner core of electrons than the 2s electrons.

313365 The incorrect statement among the following is